int.c File Reference

#include "postgres.h"
#include <ctype.h>
#include <limits.h>
#include "catalog/pg_type.h"
#include "funcapi.h"
#include "libpq/pqformat.h"
#include "utils/array.h"
#include "utils/builtins.h"

Include dependency graph for int.c:

Go to the source code of this file.

Data Structures
struct	generate_series_fctx

Macros
#define	SAMESIGN(a, b)   (((a) < 0) == ((b) < 0))
#define	Int2VectorSize(n)   (offsetof(int2vector, values) + (n) * sizeof(int16))

Functions
Datum	int2in (PG_FUNCTION_ARGS)
Datum	int2out (PG_FUNCTION_ARGS)
Datum	int2recv (PG_FUNCTION_ARGS)
Datum	int2send (PG_FUNCTION_ARGS)
int2vector *	buildint2vector (const int16 *int2s, int n)
Datum	int2vectorin (PG_FUNCTION_ARGS)
Datum	int2vectorout (PG_FUNCTION_ARGS)
Datum	int2vectorrecv (PG_FUNCTION_ARGS)
Datum	int2vectorsend (PG_FUNCTION_ARGS)
Datum	int4in (PG_FUNCTION_ARGS)
Datum	int4out (PG_FUNCTION_ARGS)
Datum	int4recv (PG_FUNCTION_ARGS)
Datum	int4send (PG_FUNCTION_ARGS)
Datum	i2toi4 (PG_FUNCTION_ARGS)
Datum	i4toi2 (PG_FUNCTION_ARGS)
Datum	int4_bool (PG_FUNCTION_ARGS)
Datum	bool_int4 (PG_FUNCTION_ARGS)
Datum	int4eq (PG_FUNCTION_ARGS)
Datum	int4ne (PG_FUNCTION_ARGS)
Datum	int4lt (PG_FUNCTION_ARGS)
Datum	int4le (PG_FUNCTION_ARGS)
Datum	int4gt (PG_FUNCTION_ARGS)
Datum	int4ge (PG_FUNCTION_ARGS)
Datum	int2eq (PG_FUNCTION_ARGS)
Datum	int2ne (PG_FUNCTION_ARGS)
Datum	int2lt (PG_FUNCTION_ARGS)
Datum	int2le (PG_FUNCTION_ARGS)
Datum	int2gt (PG_FUNCTION_ARGS)
Datum	int2ge (PG_FUNCTION_ARGS)
Datum	int24eq (PG_FUNCTION_ARGS)
Datum	int24ne (PG_FUNCTION_ARGS)
Datum	int24lt (PG_FUNCTION_ARGS)
Datum	int24le (PG_FUNCTION_ARGS)
Datum	int24gt (PG_FUNCTION_ARGS)
Datum	int24ge (PG_FUNCTION_ARGS)
Datum	int42eq (PG_FUNCTION_ARGS)
Datum	int42ne (PG_FUNCTION_ARGS)
Datum	int42lt (PG_FUNCTION_ARGS)
Datum	int42le (PG_FUNCTION_ARGS)
Datum	int42gt (PG_FUNCTION_ARGS)
Datum	int42ge (PG_FUNCTION_ARGS)
Datum	int4um (PG_FUNCTION_ARGS)
Datum	int4up (PG_FUNCTION_ARGS)
Datum	int4pl (PG_FUNCTION_ARGS)
Datum	int4mi (PG_FUNCTION_ARGS)
Datum	int4mul (PG_FUNCTION_ARGS)
Datum	int4div (PG_FUNCTION_ARGS)
Datum	int4inc (PG_FUNCTION_ARGS)
Datum	int2um (PG_FUNCTION_ARGS)
Datum	int2up (PG_FUNCTION_ARGS)
Datum	int2pl (PG_FUNCTION_ARGS)
Datum	int2mi (PG_FUNCTION_ARGS)
Datum	int2mul (PG_FUNCTION_ARGS)
Datum	int2div (PG_FUNCTION_ARGS)
Datum	int24pl (PG_FUNCTION_ARGS)
Datum	int24mi (PG_FUNCTION_ARGS)
Datum	int24mul (PG_FUNCTION_ARGS)
Datum	int24div (PG_FUNCTION_ARGS)
Datum	int42pl (PG_FUNCTION_ARGS)
Datum	int42mi (PG_FUNCTION_ARGS)
Datum	int42mul (PG_FUNCTION_ARGS)
Datum	int42div (PG_FUNCTION_ARGS)
Datum	int4mod (PG_FUNCTION_ARGS)
Datum	int2mod (PG_FUNCTION_ARGS)
Datum	int4abs (PG_FUNCTION_ARGS)
Datum	int2abs (PG_FUNCTION_ARGS)
Datum	int2larger (PG_FUNCTION_ARGS)
Datum	int2smaller (PG_FUNCTION_ARGS)
Datum	int4larger (PG_FUNCTION_ARGS)
Datum	int4smaller (PG_FUNCTION_ARGS)
Datum	int4and (PG_FUNCTION_ARGS)
Datum	int4or (PG_FUNCTION_ARGS)
Datum	int4xor (PG_FUNCTION_ARGS)
Datum	int4shl (PG_FUNCTION_ARGS)
Datum	int4shr (PG_FUNCTION_ARGS)
Datum	int4not (PG_FUNCTION_ARGS)
Datum	int2and (PG_FUNCTION_ARGS)
Datum	int2or (PG_FUNCTION_ARGS)
Datum	int2xor (PG_FUNCTION_ARGS)
Datum	int2not (PG_FUNCTION_ARGS)
Datum	int2shl (PG_FUNCTION_ARGS)
Datum	int2shr (PG_FUNCTION_ARGS)
Datum	generate_series_int4 (PG_FUNCTION_ARGS)
Datum	generate_series_step_int4 (PG_FUNCTION_ARGS)

Macro Definition Documentation

#define Int2VectorSize

(

n

)

(offsetof(int2vector, values) + (n) * sizeof(int16))

Definition at line 43 of file int.c.

Referenced by buildint2vector(), and int2vectorin().

#define SAMESIGN	(		a,
			b
	)		(((a) < 0) == ((b) < 0))

Definition at line 41 of file int.c.

Referenced by generate_series_step_int4(), int24mi(), int24pl(), int2div(), int2mi(), int2pl(), int2um(), int42div(), int42mi(), int42pl(), int4div(), int4mi(), int4pl(), and int4um().

Function Documentation

Datum bool_int4

(

PG_FUNCTION_ARGS

)

Definition at line 351 of file int.c.

References PG_GETARG_BOOL, and PG_RETURN_INT32.

{
    if (PG_GETARG_BOOL(0) == false)
        PG_RETURN_INT32(0);
    else
        PG_RETURN_INT32(1);
}

int2vector* buildint2vector	(	const int16 *	int2s,
		int	n
	)

Definition at line 112 of file int.c.

References int2vector::dataoffset, int2vector::dim1, int2vector::elemtype, INT2OID, Int2VectorSize, int2vector::lbound1, int2vector::ndim, palloc0(), result, SET_VARSIZE, and int2vector::values.

Referenced by CreateStatistics(), CreateTrigger(), StorePartitionKey(), and UpdateIndexRelation().

{
    int2vector *result;

    result = (int2vector *) palloc0(Int2VectorSize(n));

    if (n > 0 && int2s)
        memcpy(result->values, int2s, n * sizeof(int16));

    /*
     * Attach standard array header.  For historical reasons, we set the index
     * lower bound to 0 not 1.
     */
    SET_VARSIZE(result, Int2VectorSize(n));
    result->ndim = 1;
    result->dataoffset = 0;     /* never any nulls */
    result->elemtype = INT2OID;
    result->dim1 = n;
    result->lbound1 = 0;

    return result;
}

Datum generate_series_int4

(

PG_FUNCTION_ARGS

)

Definition at line 1321 of file int.c.

References generate_series_step_int4().

{
    return generate_series_step_int4(fcinfo);
}

Datum generate_series_step_int4

(

PG_FUNCTION_ARGS

)

Definition at line 1327 of file int.c.

References generate_series_fctx::current, ereport, errcode(), errmsg(), ERROR, generate_series_fctx::finish, Int32GetDatum, MemoryContextSwitchTo(), FuncCallContext::multi_call_memory_ctx, palloc(), PG_GETARG_INT32, PG_NARGS, result, SAMESIGN, SRF_FIRSTCALL_INIT, SRF_IS_FIRSTCALL, SRF_PERCALL_SETUP, SRF_RETURN_DONE, SRF_RETURN_NEXT, generate_series_fctx::step, and FuncCallContext::user_fctx.

Referenced by generate_series_int4().

{
    FuncCallContext *funcctx;
    generate_series_fctx *fctx;
    int32       result;
    MemoryContext oldcontext;

    /* stuff done only on the first call of the function */
    if (SRF_IS_FIRSTCALL())
    {
        int32       start = PG_GETARG_INT32(0);
        int32       finish = PG_GETARG_INT32(1);
        int32       step = 1;

        /* see if we were given an explicit step size */
        if (PG_NARGS() == 3)
            step = PG_GETARG_INT32(2);
        if (step == 0)
            ereport(ERROR,
                    (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
                     errmsg("step size cannot equal zero")));

        /* create a function context for cross-call persistence */
        funcctx = SRF_FIRSTCALL_INIT();

        /*
         * switch to memory context appropriate for multiple function calls
         */
        oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx);

        /* allocate memory for user context */
        fctx = (generate_series_fctx *) palloc(sizeof(generate_series_fctx));

        /*
         * Use fctx to keep state from call to call. Seed current with the
         * original start value
         */
        fctx->current = start;
        fctx->finish = finish;
        fctx->step = step;

        funcctx->user_fctx = fctx;
        MemoryContextSwitchTo(oldcontext);
    }

    /* stuff done on every call of the function */
    funcctx = SRF_PERCALL_SETUP();

    /*
     * get the saved state and use current as the result for this iteration
     */
    fctx = funcctx->user_fctx;
    result = fctx->current;

    if ((fctx->step > 0 && fctx->current <= fctx->finish) ||
        (fctx->step < 0 && fctx->current >= fctx->finish))
    {
        /* increment current in preparation for next iteration */
        fctx->current += fctx->step;

        /* if next-value computation overflows, this is the final result */
        if (SAMESIGN(result, fctx->step) && !SAMESIGN(result, fctx->current))
            fctx->step = 0;

        /* do when there is more left to send */
        SRF_RETURN_NEXT(funcctx, Int32GetDatum(result));
    }
    else
        /* do when there is no more left */
        SRF_RETURN_DONE(funcctx);
}

Datum i2toi4

(

PG_FUNCTION_ARGS

)

Definition at line 319 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_INT32.

{
    int16       arg1 = PG_GETARG_INT16(0);

    PG_RETURN_INT32((int32) arg1);
}

Datum i4toi2

(

PG_FUNCTION_ARGS

)

Definition at line 327 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT32, and PG_RETURN_INT16.

{
    int32       arg1 = PG_GETARG_INT32(0);

    if (arg1 < SHRT_MIN || arg1 > SHRT_MAX)
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("smallint out of range")));

    PG_RETURN_INT16((int16) arg1);
}

Datum int24div

(

PG_FUNCTION_ARGS

)

Definition at line 945 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_GETARG_INT32, PG_RETURN_INT32, and PG_RETURN_NULL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int32       arg2 = PG_GETARG_INT32(1);

    if (arg2 == 0)
    {
        ereport(ERROR,
                (errcode(ERRCODE_DIVISION_BY_ZERO),
                 errmsg("division by zero")));
        /* ensure compiler realizes we mustn't reach the division (gcc bug) */
        PG_RETURN_NULL();
    }

    /* No overflow is possible */
    PG_RETURN_INT32((int32) arg1 / arg2);
}

Datum int24eq

(

PG_FUNCTION_ARGS

)

Definition at line 483 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_BOOL(arg1 == arg2);
}

Datum int24ge

(

PG_FUNCTION_ARGS

)

Definition at line 528 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_BOOL(arg1 >= arg2);
}

Datum int24gt

(

PG_FUNCTION_ARGS

)

Definition at line 519 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_BOOL(arg1 > arg2);
}

Datum int24le

(

PG_FUNCTION_ARGS

)

Definition at line 510 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_BOOL(arg1 <= arg2);
}

Datum int24lt

(

PG_FUNCTION_ARGS

)

Definition at line 501 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_BOOL(arg1 < arg2);
}

Datum int24mi

(

PG_FUNCTION_ARGS

)

Definition at line 897 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_GETARG_INT32, PG_RETURN_INT32, result, and SAMESIGN.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int32       arg2 = PG_GETARG_INT32(1);
    int32       result;

    result = arg1 - arg2;

    /*
     * Overflow check.  If the inputs are of the same sign then their
     * difference cannot overflow.  If they are of different signs then the
     * result should be of the same sign as the first input.
     */
    if (!SAMESIGN(arg1, arg2) && !SAMESIGN(result, arg1))
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("integer out of range")));
    PG_RETURN_INT32(result);
}

Datum int24mul

(

PG_FUNCTION_ARGS

)

Definition at line 918 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_GETARG_INT32, PG_RETURN_INT32, and result.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int32       arg2 = PG_GETARG_INT32(1);
    int32       result;

    result = arg1 * arg2;

    /*
     * Overflow check.  We basically check to see if result / arg2 gives arg1
     * again.  There is one case where this fails: arg2 = 0 (which cannot
     * overflow).
     *
     * Since the division is likely much more expensive than the actual
     * multiplication, we'd like to skip it where possible.  The best bang for
     * the buck seems to be to check whether both inputs are in the int16
     * range; if so, no overflow is possible.
     */
    if (!(arg2 >= (int32) SHRT_MIN && arg2 <= (int32) SHRT_MAX) &&
        result / arg2 != arg1)
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("integer out of range")));
    PG_RETURN_INT32(result);
}

Datum int24ne

(

PG_FUNCTION_ARGS

)

Definition at line 492 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_BOOL(arg1 != arg2);
}

Datum int24pl

(

PG_FUNCTION_ARGS

)

Definition at line 876 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_GETARG_INT32, PG_RETURN_INT32, result, and SAMESIGN.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int32       arg2 = PG_GETARG_INT32(1);
    int32       result;

    result = arg1 + arg2;

    /*
     * Overflow check.  If the inputs are of different signs then their sum
     * cannot overflow.  If the inputs are of the same sign, their sum had
     * better be that sign too.
     */
    if (SAMESIGN(arg1, arg2) && !SAMESIGN(result, arg1))
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("integer out of range")));
    PG_RETURN_INT32(result);
}

Datum int2abs

(

PG_FUNCTION_ARGS

)

Definition at line 1149 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_RETURN_INT16, and result.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       result;

    result = (arg1 < 0) ? -arg1 : arg1;
    /* overflow check (needed for SHRT_MIN) */
    if (result < 0)
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("smallint out of range")));
    PG_RETURN_INT16(result);
}

Datum int2and

(

PG_FUNCTION_ARGS

)

Definition at line 1264 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_INT16.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_INT16(arg1 & arg2);
}

Datum int2div

(

PG_FUNCTION_ARGS

)

Definition at line 836 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_RETURN_INT16, PG_RETURN_NULL, result, and SAMESIGN.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);
    int16       result;

    if (arg2 == 0)
    {
        ereport(ERROR,
                (errcode(ERRCODE_DIVISION_BY_ZERO),
                 errmsg("division by zero")));
        /* ensure compiler realizes we mustn't reach the division (gcc bug) */
        PG_RETURN_NULL();
    }

    /*
     * SHRT_MIN / -1 is problematic, since the result can't be represented on
     * a two's-complement machine.  Some machines produce SHRT_MIN, some
     * produce zero, some throw an exception.  We can dodge the problem by
     * recognizing that division by -1 is the same as negation.
     */
    if (arg2 == -1)
    {
        result = -arg1;
        /* overflow check (needed for SHRT_MIN) */
        if (arg1 != 0 && SAMESIGN(result, arg1))
            ereport(ERROR,
                    (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                     errmsg("smallint out of range")));
        PG_RETURN_INT16(result);
    }

    /* No overflow is possible */

    result = arg1 / arg2;

    PG_RETURN_INT16(result);
}

Datum int2eq

(

PG_FUNCTION_ARGS

)

Definition at line 429 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_BOOL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_BOOL(arg1 == arg2);
}

Datum int2ge

(

PG_FUNCTION_ARGS

)

Definition at line 474 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_BOOL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_BOOL(arg1 >= arg2);
}

Datum int2gt

(

PG_FUNCTION_ARGS

)

Definition at line 465 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_BOOL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_BOOL(arg1 > arg2);
}

Datum int2in

(

PG_FUNCTION_ARGS

)

Definition at line 61 of file int.c.

References pg_atoi(), PG_GETARG_CSTRING, and PG_RETURN_INT16.

{
    char       *num = PG_GETARG_CSTRING(0);

    PG_RETURN_INT16(pg_atoi(num, sizeof(int16), '\0'));
}

Datum int2larger

(

PG_FUNCTION_ARGS

)

Definition at line 1164 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_INT16.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_INT16((arg1 > arg2) ? arg1 : arg2);
}

Datum int2le

(

PG_FUNCTION_ARGS

)

Definition at line 456 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_BOOL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_BOOL(arg1 <= arg2);
}

Datum int2lt

(

PG_FUNCTION_ARGS

)

Definition at line 447 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_BOOL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_BOOL(arg1 < arg2);
}

Datum int2mi

(

PG_FUNCTION_ARGS

)

Definition at line 794 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_RETURN_INT16, result, and SAMESIGN.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);
    int16       result;

    result = arg1 - arg2;

    /*
     * Overflow check.  If the inputs are of the same sign then their
     * difference cannot overflow.  If they are of different signs then the
     * result should be of the same sign as the first input.
     */
    if (!SAMESIGN(arg1, arg2) && !SAMESIGN(result, arg1))
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("smallint out of range")));
    PG_RETURN_INT16(result);
}

Datum int2mod

(

PG_FUNCTION_ARGS

)

Definition at line 1101 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_RETURN_INT16, and PG_RETURN_NULL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);

    if (arg2 == 0)
    {
        ereport(ERROR,
                (errcode(ERRCODE_DIVISION_BY_ZERO),
                 errmsg("division by zero")));
        /* ensure compiler realizes we mustn't reach the division (gcc bug) */
        PG_RETURN_NULL();
    }

    /*
     * Some machines throw a floating-point exception for INT_MIN % -1, which
     * is a bit silly since the correct answer is perfectly well-defined,
     * namely zero.  (It's not clear this ever happens when dealing with
     * int16, but we might as well have the test for safety.)
     */
    if (arg2 == -1)
        PG_RETURN_INT16(0);

    /* No overflow is possible */

    PG_RETURN_INT16(arg1 % arg2);
}

Datum int2mul

(

PG_FUNCTION_ARGS

)

Definition at line 815 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, and PG_RETURN_INT16.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);
    int32       result32;

    /*
     * The most practical way to detect overflow is to do the arithmetic in
     * int32 (so that the result can't overflow) and then do a range check.
     */
    result32 = (int32) arg1 * (int32) arg2;

    if (result32 < SHRT_MIN || result32 > SHRT_MAX)
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("smallint out of range")));

    PG_RETURN_INT16((int16) result32);
}

Datum int2ne

(

PG_FUNCTION_ARGS

)

Definition at line 438 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_BOOL.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_BOOL(arg1 != arg2);
}

Datum int2not

(

PG_FUNCTION_ARGS

)

Definition at line 1291 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_INT16.

{
    int16       arg1 = PG_GETARG_INT16(0);

    PG_RETURN_INT16(~arg1);
}

Datum int2or

(

PG_FUNCTION_ARGS

)

Definition at line 1273 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_INT16.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_INT16(arg1 | arg2);
}

Datum int2out

(

PG_FUNCTION_ARGS

)

Definition at line 72 of file int.c.

References palloc(), PG_GETARG_INT16, pg_itoa(), PG_RETURN_CSTRING, and result.

{
    int16       arg1 = PG_GETARG_INT16(0);
    char       *result = (char *) palloc(7);    /* sign, 5 digits, '\0' */

    pg_itoa(arg1, result);
    PG_RETURN_CSTRING(result);
}

Datum int2pl

(

PG_FUNCTION_ARGS

)

Definition at line 773 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_RETURN_INT16, result, and SAMESIGN.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);
    int16       result;

    result = arg1 + arg2;

    /*
     * Overflow check.  If the inputs are of different signs then their sum
     * cannot overflow.  If the inputs are of the same sign, their sum had
     * better be that sign too.
     */
    if (SAMESIGN(arg1, arg2) && !SAMESIGN(result, arg1))
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("smallint out of range")));
    PG_RETURN_INT16(result);
}

Datum int2recv

(

PG_FUNCTION_ARGS

)

Definition at line 85 of file int.c.

References buf, PG_GETARG_POINTER, PG_RETURN_INT16, and pq_getmsgint().

{
    StringInfo  buf = (StringInfo) PG_GETARG_POINTER(0);

    PG_RETURN_INT16((int16) pq_getmsgint(buf, sizeof(int16)));
}

Datum int2send

(

PG_FUNCTION_ARGS

)

Definition at line 96 of file int.c.

References buf, PG_GETARG_INT16, PG_RETURN_BYTEA_P, pq_begintypsend(), pq_endtypsend(), and pq_sendint().

{
    int16       arg1 = PG_GETARG_INT16(0);
    StringInfoData buf;

    pq_begintypsend(&buf);
    pq_sendint(&buf, arg1, sizeof(int16));
    PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}

Datum int2shl

(

PG_FUNCTION_ARGS

)

Definition at line 1300 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_INT16.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_INT16(arg1 << arg2);
}

Datum int2shr

(

PG_FUNCTION_ARGS

)

Definition at line 1309 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_INT16.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_INT16(arg1 >> arg2);
}

Datum int2smaller

(

PG_FUNCTION_ARGS

)

Definition at line 1173 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_INT16.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_INT16((arg1 < arg2) ? arg1 : arg2);
}

Datum int2um

(

PG_FUNCTION_ARGS

)

Definition at line 750 of file int.c.

References arg, ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_RETURN_INT16, result, and SAMESIGN.

{
    int16       arg = PG_GETARG_INT16(0);
    int16       result;

    result = -arg;
    /* overflow check (needed for SHRT_MIN) */
    if (arg != 0 && SAMESIGN(result, arg))
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("smallint out of range")));
    PG_RETURN_INT16(result);
}

Datum int2up

(

PG_FUNCTION_ARGS

)

Definition at line 765 of file int.c.

References arg, PG_GETARG_INT16, and PG_RETURN_INT16.

{
    int16       arg = PG_GETARG_INT16(0);

    PG_RETURN_INT16(arg);
}

Datum int2vectorin

(

PG_FUNCTION_ARGS

)

Definition at line 139 of file int.c.

References int2vector::dataoffset, int2vector::dim1, int2vector::elemtype, ereport, errcode(), errmsg(), ERROR, FUNC_MAX_ARGS, INT2OID, Int2VectorSize, int2vector::lbound1, int2vector::ndim, palloc0(), pg_atoi(), PG_GETARG_CSTRING, PG_RETURN_POINTER, result, SET_VARSIZE, and int2vector::values.

{
    char       *intString = PG_GETARG_CSTRING(0);
    int2vector *result;
    int         n;

    result = (int2vector *) palloc0(Int2VectorSize(FUNC_MAX_ARGS));

    for (n = 0; *intString && n < FUNC_MAX_ARGS; n++)
    {
        while (*intString && isspace((unsigned char) *intString))
            intString++;
        if (*intString == '\0')
            break;
        result->values[n] = pg_atoi(intString, sizeof(int16), ' ');
        while (*intString && !isspace((unsigned char) *intString))
            intString++;
    }
    while (*intString && isspace((unsigned char) *intString))
        intString++;
    if (*intString)
        ereport(ERROR,
                (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
                 errmsg("int2vector has too many elements")));

    SET_VARSIZE(result, Int2VectorSize(n));
    result->ndim = 1;
    result->dataoffset = 0;     /* never any nulls */
    result->elemtype = INT2OID;
    result->dim1 = n;
    result->lbound1 = 0;

    PG_RETURN_POINTER(result);
}

Datum int2vectorout

(

PG_FUNCTION_ARGS

)

Definition at line 178 of file int.c.

References int2vector::dim1, palloc(), PG_GETARG_POINTER, pg_itoa(), PG_RETURN_CSTRING, result, and int2vector::values.

{
    int2vector *int2Array = (int2vector *) PG_GETARG_POINTER(0);
    int         num,
                nnums = int2Array->dim1;
    char       *rp;
    char       *result;

    /* assumes sign, 5 digits, ' ' */
    rp = result = (char *) palloc(nnums * 7 + 1);
    for (num = 0; num < nnums; num++)
    {
        if (num != 0)
            *rp++ = ' ';
        pg_itoa(int2Array->values[num], rp);
        while (*++rp != '\0')
            ;
    }
    *rp = '\0';
    PG_RETURN_CSTRING(result);
}

Datum int2vectorrecv

(

PG_FUNCTION_ARGS

)

Definition at line 204 of file int.c.

References FunctionCallInfoData::arg, FunctionCallInfoData::argnull, ARR_DIMS, ARR_ELEMTYPE, ARR_HASNULL, ARR_LBOUND, ARR_NDIM, array_recv(), Assert, buf, DatumGetPointer, ereport, errcode(), errmsg(), ERROR, FunctionCallInfoData::flinfo, FUNC_MAX_ARGS, InitFunctionCallInfoData, INT2OID, Int32GetDatum, InvalidOid, FunctionCallInfoData::isnull, NULL, ObjectIdGetDatum, PG_GETARG_POINTER, PG_RETURN_POINTER, PointerGetDatum, and result.

{
    StringInfo  buf = (StringInfo) PG_GETARG_POINTER(0);
    FunctionCallInfoData locfcinfo;
    int2vector *result;

    /*
     * Normally one would call array_recv() using DirectFunctionCall3, but
     * that does not work since array_recv wants to cache some data using
     * fcinfo->flinfo->fn_extra.  So we need to pass it our own flinfo
     * parameter.
     */
    InitFunctionCallInfoData(locfcinfo, fcinfo->flinfo, 3,
                             InvalidOid, NULL, NULL);

    locfcinfo.arg[0] = PointerGetDatum(buf);
    locfcinfo.arg[1] = ObjectIdGetDatum(INT2OID);
    locfcinfo.arg[2] = Int32GetDatum(-1);
    locfcinfo.argnull[0] = false;
    locfcinfo.argnull[1] = false;
    locfcinfo.argnull[2] = false;

    result = (int2vector *) DatumGetPointer(array_recv(&locfcinfo));

    Assert(!locfcinfo.isnull);

    /* sanity checks: int2vector must be 1-D, 0-based, no nulls */
    if (ARR_NDIM(result) != 1 ||
        ARR_HASNULL(result) ||
        ARR_ELEMTYPE(result) != INT2OID ||
        ARR_LBOUND(result)[0] != 0)
        ereport(ERROR,
                (errcode(ERRCODE_INVALID_BINARY_REPRESENTATION),
                 errmsg("invalid int2vector data")));

    /* check length for consistency with int2vectorin() */
    if (ARR_DIMS(result)[0] > FUNC_MAX_ARGS)
        ereport(ERROR,
                (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
                 errmsg("oidvector has too many elements")));

    PG_RETURN_POINTER(result);
}

Datum int2vectorsend

(

PG_FUNCTION_ARGS

)

Definition at line 252 of file int.c.

References array_send().

{
    return array_send(fcinfo);
}

Datum int2xor

(

PG_FUNCTION_ARGS

)

Definition at line 1282 of file int.c.

References PG_GETARG_INT16, and PG_RETURN_INT16.

{
    int16       arg1 = PG_GETARG_INT16(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_INT16(arg1 ^ arg2);
}

Datum int42div

(

PG_FUNCTION_ARGS

)

Definition at line 1033 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_GETARG_INT32, PG_RETURN_INT32, PG_RETURN_NULL, result, and SAMESIGN.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int16       arg2 = PG_GETARG_INT16(1);
    int32       result;

    if (arg2 == 0)
    {
        ereport(ERROR,
                (errcode(ERRCODE_DIVISION_BY_ZERO),
                 errmsg("division by zero")));
        /* ensure compiler realizes we mustn't reach the division (gcc bug) */
        PG_RETURN_NULL();
    }

    /*
     * INT_MIN / -1 is problematic, since the result can't be represented on a
     * two's-complement machine.  Some machines produce INT_MIN, some produce
     * zero, some throw an exception.  We can dodge the problem by recognizing
     * that division by -1 is the same as negation.
     */
    if (arg2 == -1)
    {
        result = -arg1;
        /* overflow check (needed for INT_MIN) */
        if (arg1 != 0 && SAMESIGN(result, arg1))
            ereport(ERROR,
                    (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                     errmsg("integer out of range")));
        PG_RETURN_INT32(result);
    }

    /* No overflow is possible */

    result = arg1 / arg2;

    PG_RETURN_INT32(result);
}

Datum int42eq

(

PG_FUNCTION_ARGS

)

Definition at line 537 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_BOOL(arg1 == arg2);
}

Datum int42ge

(

PG_FUNCTION_ARGS

)

Definition at line 582 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_BOOL(arg1 >= arg2);
}

Datum int42gt

(

PG_FUNCTION_ARGS

)

Definition at line 573 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_BOOL(arg1 > arg2);
}

Datum int42le

(

PG_FUNCTION_ARGS

)

Definition at line 564 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_BOOL(arg1 <= arg2);
}

Datum int42lt

(

PG_FUNCTION_ARGS

)

Definition at line 555 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_BOOL(arg1 < arg2);
}

Datum int42mi

(

PG_FUNCTION_ARGS

)

Definition at line 985 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_GETARG_INT32, PG_RETURN_INT32, result, and SAMESIGN.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int16       arg2 = PG_GETARG_INT16(1);
    int32       result;

    result = arg1 - arg2;

    /*
     * Overflow check.  If the inputs are of the same sign then their
     * difference cannot overflow.  If they are of different signs then the
     * result should be of the same sign as the first input.
     */
    if (!SAMESIGN(arg1, arg2) && !SAMESIGN(result, arg1))
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("integer out of range")));
    PG_RETURN_INT32(result);
}

Datum int42mul

(

PG_FUNCTION_ARGS

)

Definition at line 1006 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_GETARG_INT32, PG_RETURN_INT32, and result.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int16       arg2 = PG_GETARG_INT16(1);
    int32       result;

    result = arg1 * arg2;

    /*
     * Overflow check.  We basically check to see if result / arg1 gives arg2
     * again.  There is one case where this fails: arg1 = 0 (which cannot
     * overflow).
     *
     * Since the division is likely much more expensive than the actual
     * multiplication, we'd like to skip it where possible.  The best bang for
     * the buck seems to be to check whether both inputs are in the int16
     * range; if so, no overflow is possible.
     */
    if (!(arg1 >= (int32) SHRT_MIN && arg1 <= (int32) SHRT_MAX) &&
        result / arg1 != arg2)
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("integer out of range")));
    PG_RETURN_INT32(result);
}

Datum int42ne

(

PG_FUNCTION_ARGS

)

Definition at line 546 of file int.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int16       arg2 = PG_GETARG_INT16(1);

    PG_RETURN_BOOL(arg1 != arg2);
}

Datum int42pl

(

PG_FUNCTION_ARGS

)

Definition at line 964 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_GETARG_INT32, PG_RETURN_INT32, result, and SAMESIGN.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int16       arg2 = PG_GETARG_INT16(1);
    int32       result;

    result = arg1 + arg2;

    /*
     * Overflow check.  If the inputs are of different signs then their sum
     * cannot overflow.  If the inputs are of the same sign, their sum had
     * better be that sign too.
     */
    if (SAMESIGN(arg1, arg2) && !SAMESIGN(result, arg1))
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("integer out of range")));
    PG_RETURN_INT32(result);
}

Datum int4_bool

(

PG_FUNCTION_ARGS

)

Definition at line 341 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    if (PG_GETARG_INT32(0) == 0)
        PG_RETURN_BOOL(false);
    else
        PG_RETURN_BOOL(true);
}

Datum int4abs

(

PG_FUNCTION_ARGS

)

Definition at line 1134 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT32, PG_RETURN_INT32, and result.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       result;

    result = (arg1 < 0) ? -arg1 : arg1;
    /* overflow check (needed for INT_MIN) */
    if (result < 0)
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("integer out of range")));
    PG_RETURN_INT32(result);
}

Datum int4and

(

PG_FUNCTION_ARGS

)

Definition at line 1211 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_INT32.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_INT32(arg1 & arg2);
}

Datum int4div

(

PG_FUNCTION_ARGS

)

Definition at line 694 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT32, PG_RETURN_INT32, PG_RETURN_NULL, result, and SAMESIGN.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);
    int32       result;

    if (arg2 == 0)
    {
        ereport(ERROR,
                (errcode(ERRCODE_DIVISION_BY_ZERO),
                 errmsg("division by zero")));
        /* ensure compiler realizes we mustn't reach the division (gcc bug) */
        PG_RETURN_NULL();
    }

    /*
     * INT_MIN / -1 is problematic, since the result can't be represented on a
     * two's-complement machine.  Some machines produce INT_MIN, some produce
     * zero, some throw an exception.  We can dodge the problem by recognizing
     * that division by -1 is the same as negation.
     */
    if (arg2 == -1)
    {
        result = -arg1;
        /* overflow check (needed for INT_MIN) */
        if (arg1 != 0 && SAMESIGN(result, arg1))
            ereport(ERROR,
                    (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                     errmsg("integer out of range")));
        PG_RETURN_INT32(result);
    }

    /* No overflow is possible */

    result = arg1 / arg2;

    PG_RETURN_INT32(result);
}

Datum int4eq

(

PG_FUNCTION_ARGS

)

Definition at line 375 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_BOOL(arg1 == arg2);
}

Datum int4ge

(

PG_FUNCTION_ARGS

)

Definition at line 420 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_BOOL(arg1 >= arg2);
}

Datum int4gt

(

PG_FUNCTION_ARGS

)

Definition at line 411 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_BOOL(arg1 > arg2);
}

Datum int4in

(

PG_FUNCTION_ARGS

)

Definition at line 266 of file int.c.

References pg_atoi(), PG_GETARG_CSTRING, and PG_RETURN_INT32.

Referenced by funny_dup17(), inet_client_port(), inet_server_port(), and pg_stat_get_backend_client_port().

{
    char       *num = PG_GETARG_CSTRING(0);

    PG_RETURN_INT32(pg_atoi(num, sizeof(int32), '\0'));
}

Datum int4inc

(

PG_FUNCTION_ARGS

)

Definition at line 734 of file int.c.

References arg, ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT32, PG_RETURN_INT32, and result.

{
    int32       arg = PG_GETARG_INT32(0);
    int32       result;

    result = arg + 1;
    /* Overflow check */
    if (arg > 0 && result < 0)
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("integer out of range")));

    PG_RETURN_INT32(result);
}

Datum int4larger

(

PG_FUNCTION_ARGS

)

Definition at line 1182 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_INT32.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_INT32((arg1 > arg2) ? arg1 : arg2);
}

Datum int4le

(

PG_FUNCTION_ARGS

)

Definition at line 402 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_BOOL(arg1 <= arg2);
}

Datum int4lt

(

PG_FUNCTION_ARGS

)

Definition at line 393 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_BOOL(arg1 < arg2);
}

Datum int4mi

(

PG_FUNCTION_ARGS

)

Definition at line 642 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT32, PG_RETURN_INT32, result, and SAMESIGN.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);
    int32       result;

    result = arg1 - arg2;

    /*
     * Overflow check.  If the inputs are of the same sign then their
     * difference cannot overflow.  If they are of different signs then the
     * result should be of the same sign as the first input.
     */
    if (!SAMESIGN(arg1, arg2) && !SAMESIGN(result, arg1))
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("integer out of range")));
    PG_RETURN_INT32(result);
}

Datum int4mod

(

PG_FUNCTION_ARGS

)

Definition at line 1073 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT32, PG_RETURN_INT32, and PG_RETURN_NULL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    if (arg2 == 0)
    {
        ereport(ERROR,
                (errcode(ERRCODE_DIVISION_BY_ZERO),
                 errmsg("division by zero")));
        /* ensure compiler realizes we mustn't reach the division (gcc bug) */
        PG_RETURN_NULL();
    }

    /*
     * Some machines throw a floating-point exception for INT_MIN % -1, which
     * is a bit silly since the correct answer is perfectly well-defined,
     * namely zero.
     */
    if (arg2 == -1)
        PG_RETURN_INT32(0);

    /* No overflow is possible */

    PG_RETURN_INT32(arg1 % arg2);
}

Datum int4mul

(

PG_FUNCTION_ARGS

)

Definition at line 663 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT32, PG_RETURN_INT32, and result.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);
    int32       result;

    result = arg1 * arg2;

    /*
     * Overflow check.  We basically check to see if result / arg2 gives arg1
     * again.  There are two cases where this fails: arg2 = 0 (which cannot
     * overflow) and arg1 = INT_MIN, arg2 = -1 (where the division itself will
     * overflow and thus incorrectly match).
     *
     * Since the division is likely much more expensive than the actual
     * multiplication, we'd like to skip it where possible.  The best bang for
     * the buck seems to be to check whether both inputs are in the int16
     * range; if so, no overflow is possible.
     */
    if (!(arg1 >= (int32) SHRT_MIN && arg1 <= (int32) SHRT_MAX &&
          arg2 >= (int32) SHRT_MIN && arg2 <= (int32) SHRT_MAX) &&
        arg2 != 0 &&
        ((arg2 == -1 && arg1 < 0 && result < 0) ||
         result / arg2 != arg1))
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("integer out of range")));
    PG_RETURN_INT32(result);
}

Datum int4ne

(

PG_FUNCTION_ARGS

)

Definition at line 384 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_BOOL.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_BOOL(arg1 != arg2);
}

Datum int4not

(

PG_FUNCTION_ARGS

)

Definition at line 1256 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_INT32.

{
    int32       arg1 = PG_GETARG_INT32(0);

    PG_RETURN_INT32(~arg1);
}

Datum int4or

(

PG_FUNCTION_ARGS

)

Definition at line 1220 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_INT32.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_INT32(arg1 | arg2);
}

Datum int4out

(

PG_FUNCTION_ARGS

)

Definition at line 277 of file int.c.

References palloc(), PG_GETARG_INT32, pg_ltoa(), PG_RETURN_CSTRING, and result.

Referenced by int4_to_char().

{
    int32       arg1 = PG_GETARG_INT32(0);
    char       *result = (char *) palloc(12);   /* sign, 10 digits, '\0' */

    pg_ltoa(arg1, result);
    PG_RETURN_CSTRING(result);
}

Datum int4pl

(

PG_FUNCTION_ARGS

)

Definition at line 621 of file int.c.

References ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT32, PG_RETURN_INT32, result, and SAMESIGN.

Referenced by int4range_canonical().

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);
    int32       result;

    result = arg1 + arg2;

    /*
     * Overflow check.  If the inputs are of different signs then their sum
     * cannot overflow.  If the inputs are of the same sign, their sum had
     * better be that sign too.
     */
    if (SAMESIGN(arg1, arg2) && !SAMESIGN(result, arg1))
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("integer out of range")));
    PG_RETURN_INT32(result);
}

Datum int4recv

(

PG_FUNCTION_ARGS

)

Definition at line 290 of file int.c.

References buf, PG_GETARG_POINTER, PG_RETURN_INT32, and pq_getmsgint().

{
    StringInfo  buf = (StringInfo) PG_GETARG_POINTER(0);

    PG_RETURN_INT32((int32) pq_getmsgint(buf, sizeof(int32)));
}

Datum int4send

(

PG_FUNCTION_ARGS

)

Definition at line 301 of file int.c.

References buf, PG_GETARG_INT32, PG_RETURN_BYTEA_P, pq_begintypsend(), pq_endtypsend(), and pq_sendint().

{
    int32       arg1 = PG_GETARG_INT32(0);
    StringInfoData buf;

    pq_begintypsend(&buf);
    pq_sendint(&buf, arg1, sizeof(int32));
    PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}

Datum int4shl

(

PG_FUNCTION_ARGS

)

Definition at line 1238 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_INT32.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_INT32(arg1 << arg2);
}

Datum int4shr

(

PG_FUNCTION_ARGS

)

Definition at line 1247 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_INT32.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_INT32(arg1 >> arg2);
}

Datum int4smaller

(

PG_FUNCTION_ARGS

)

Definition at line 1191 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_INT32.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_INT32((arg1 < arg2) ? arg1 : arg2);
}

Datum int4um

(

PG_FUNCTION_ARGS

)

Definition at line 598 of file int.c.

References arg, ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT32, PG_RETURN_INT32, result, and SAMESIGN.

{
    int32       arg = PG_GETARG_INT32(0);
    int32       result;

    result = -arg;
    /* overflow check (needed for INT_MIN) */
    if (arg != 0 && SAMESIGN(result, arg))
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("integer out of range")));
    PG_RETURN_INT32(result);
}

Datum int4up

(

PG_FUNCTION_ARGS

)

Definition at line 613 of file int.c.

References arg, PG_GETARG_INT32, and PG_RETURN_INT32.

{
    int32       arg = PG_GETARG_INT32(0);

    PG_RETURN_INT32(arg);
}

Datum int4xor

(

PG_FUNCTION_ARGS

)

Definition at line 1229 of file int.c.

References PG_GETARG_INT32, and PG_RETURN_INT32.

{
    int32       arg1 = PG_GETARG_INT32(0);
    int32       arg2 = PG_GETARG_INT32(1);

    PG_RETURN_INT32(arg1 ^ arg2);
}