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-rw-r--r--src/backend/utils/adt/int.c343
1 files changed, 343 insertions, 0 deletions
diff --git a/src/backend/utils/adt/int.c b/src/backend/utils/adt/int.c
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+++ b/src/backend/utils/adt/int.c
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+/*-------------------------------------------------------------------------
+ *
+ * int.c--
+ * Functions for the built-in integer types.
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ * $Header: /cvsroot/pgsql/src/backend/utils/adt/int.c,v 1.1.1.1 1996/07/09 06:22:04 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+/*
+ * OLD COMMENTS
+ * I/O routines:
+ * int2in, int2out, int28in, int28out, int4in, int4out
+ * Conversion routines:
+ * itoi
+ * Boolean operators:
+ * inteq, intne, intlt, intle, intgt, intge
+ * Arithmetic operators:
+ * intpl, intmi, int4mul, intdiv
+ *
+ * Arithmetic operators:
+ * intmod, int4fac
+ *
+ * XXX makes massive and possibly unwarranted type promotion assumptions.
+ * fix me when we figure out what we want to do about ANSIfication...
+ */
+
+#include "postgres.h"
+#include "fmgr.h"
+#include "utils/builtins.h" /* where the declarations go */
+#include "utils/elog.h"
+#include "utils/palloc.h"
+
+/*****************************************************************************
+ * USER I/O ROUTINES *
+ *****************************************************************************/
+
+/*
+ * int2in - converts "num" to short
+ */
+int32 int2in(char *num)
+{
+ return((int32) pg_atoi(num, sizeof(int16), '\0'));
+}
+
+/*
+ * int2out - converts short to "num"
+ */
+char *int2out(int16 sh)
+{
+ char *result;
+
+ result = (char *)palloc(7); /* assumes sign, 5 digits, '\0' */
+ itoa((int) sh, result);
+ return(result);
+}
+
+/*
+ * int28in - converts "num num ..." to internal form
+ *
+ * Note:
+ * Fills any nonexistent digits with NULLs.
+ */
+int16 *int28in(char *shs)
+{
+ register int16 (*result)[];
+ int nums;
+
+ if (shs == NULL)
+ return(NULL);
+ result = (int16 (*)[]) palloc(sizeof(int16 [8]));
+ if ((nums = sscanf(shs, "%hd%hd%hd%hd%hd%hd%hd%hd",
+ *result,
+ *result + 1,
+ *result + 2,
+ *result + 3,
+ *result + 4,
+ *result + 5,
+ *result + 6,
+ *result + 7)) != 8) {
+ do
+ (*result)[nums++] = 0;
+ while (nums < 8);
+ }
+ return((int16 *) result);
+}
+
+/*
+ * int28out - converts internal form to "num num ..."
+ */
+char *int28out(int16 (*shs)[])
+{
+ register int num;
+ register int16 *sp;
+ register char *rp;
+ char *result;
+
+ if (shs == NULL) {
+ result = (char *)palloc(2);
+ result[0] = '-';
+ result[1] = '\0';
+ return(result);
+ }
+ rp = result = (char *)palloc(8 * 7); /* assumes sign, 5 digits, ' ' */
+ sp = *shs;
+ for (num = 8; num != 0; num--) {
+ itoa(*sp++, rp);
+ while (*++rp != '\0')
+ ;
+ *rp++ = ' ';
+ }
+ *--rp = '\0';
+ return(result);
+}
+
+/*
+ * int28in - converts "num num ..." to internal form
+ *
+ * Note:
+ * Fills any nonexistent digits with NULLs.
+ */
+int32 *int44in(char *input_string)
+{
+ int32 *foo = (int32 *)palloc(4*sizeof(int32));
+ register int i = 0;
+
+ i = sscanf(input_string,
+ "%d, %d, %d, %d",
+ &foo[0],
+ &foo[1],
+ &foo[2],
+ &foo[3]);
+ while (i < 4)
+ foo[i++] = 0;
+
+ return(foo);
+}
+
+/*
+ * int28out - converts internal form to "num num ..."
+ */
+char *int44out(int32 an_array[])
+{
+ int temp = 4;
+ char *output_string = NULL;
+ int i;
+
+ if ( temp > 0 ) {
+ char *walk;
+ output_string = (char *)palloc(16*temp); /* assume 15 digits + sign */
+ walk = output_string;
+ for ( i = 0 ; i < temp ; i++ ) {
+ itoa(an_array[i],walk);
+ while (*++walk != '\0')
+ ;
+ *walk++ = ' ';
+ }
+ *--walk = '\0';
+ }
+ return(output_string);
+}
+
+
+/*****************************************************************************
+ * PUBLIC ROUTINES *
+ *****************************************************************************/
+
+/*
+ * int4in - converts "num" to int4
+ */
+int32 int4in(char *num)
+{
+ return(pg_atoi(num, sizeof(int32), '\0'));
+}
+
+/*
+ * int4out - converts int4 to "num"
+ */
+char *int4out(int32 l)
+{
+ char *result;
+
+ result = (char *)palloc(12); /* assumes sign, 10 digits, '\0' */
+ ltoa(l, result);
+ return(result);
+}
+
+
+/*
+ * ===================
+ * CONVERSION ROUTINES
+ * ===================
+ */
+
+int32 i2toi4(int16 arg1)
+{
+ return((int32) arg1);
+}
+
+int16 i4toi2(int32 arg1)
+{
+ if (arg1< -0x8000)
+ elog(NOTICE, "i4toi2: \"%d\" causes int2 underflow", arg1);
+ if (arg1 > 0x7FFF)
+ elog(NOTICE, "i4toi2: \"%d\" causes int2 overflow", arg1);
+
+ return((int16) arg1);
+}
+
+
+/*
+ * =========================
+ * BOOLEAN OPERATOR ROUTINES
+ * =========================
+ */
+
+/*
+ * inteq - returns 1 iff arg1 == arg2
+ * intne - returns 1 iff arg1 != arg2
+ * intlt - returns 1 iff arg1 < arg2
+ * intle - returns 1 iff arg1 <= arg2
+ * intgt - returns 1 iff arg1 > arg2
+ * intge - returns 1 iff arg1 >= arg2
+ */
+int32 int4eq(int32 arg1, int32 arg2) { return(arg1 == arg2); }
+int32 int4ne(int32 arg1, int32 arg2) { return(arg1 != arg2); }
+int32 int4lt(int32 arg1, int32 arg2) { return(arg1 < arg2); }
+int32 int4le(int32 arg1, int32 arg2) { return(arg1 <= arg2); }
+int32 int4gt(int32 arg1, int32 arg2) { return(arg1 > arg2); }
+int32 int4ge(int32 arg1, int32 arg2) { return(arg1 >= arg2); }
+
+int32 int2eq(int16 arg1, int16 arg2) { return(arg1 == arg2); }
+int32 int2ne(int16 arg1, int16 arg2) { return(arg1 != arg2); }
+int32 int2lt(int16 arg1, int16 arg2) { return(arg1 < arg2); }
+int32 int2le(int16 arg1, int16 arg2) { return(arg1 <= arg2); }
+int32 int2gt(int16 arg1, int16 arg2) { return(arg1 > arg2); }
+int32 int2ge(int16 arg1, int16 arg2) { return(arg1 >= arg2); }
+
+int32 int24eq(int32 arg1, int32 arg2) { return(arg1 == arg2); }
+int32 int24ne(int32 arg1, int32 arg2) { return(arg1 != arg2); }
+int32 int24lt(int32 arg1, int32 arg2) { return(arg1 < arg2); }
+int32 int24le(int32 arg1, int32 arg2) { return(arg1 <= arg2); }
+int32 int24gt(int32 arg1, int32 arg2) { return(arg1 > arg2); }
+int32 int24ge(int32 arg1, int32 arg2) { return(arg1 >= arg2); }
+
+int32 int42eq(int32 arg1, int32 arg2) { return(arg1 == arg2); }
+int32 int42ne(int32 arg1, int32 arg2) { return(arg1 != arg2); }
+int32 int42lt(int32 arg1, int32 arg2) { return(arg1 < arg2); }
+int32 int42le(int32 arg1, int32 arg2) { return(arg1 <= arg2); }
+int32 int42gt(int32 arg1, int32 arg2) { return(arg1 > arg2); }
+int32 int42ge(int32 arg1, int32 arg2) { return(arg1 >= arg2); }
+
+
+int32 keyfirsteq(int16 *arg1, int16 arg2) { return(*arg1 == arg2); }
+
+/*
+ * int[24]pl - returns arg1 + arg2
+ * int[24]mi - returns arg1 - arg2
+ * int[24]mul - returns arg1 * arg2
+ * int[24]div - returns arg1 / arg2
+ */
+int32 int4um(int32 arg) { return(-arg); }
+int32 int4pl(int32 arg1, int32 arg2) { return(arg1 + arg2); }
+int32 int4mi(int32 arg1, int32 arg2) { return(arg1 - arg2); }
+int32 int4mul(int32 arg1, int32 arg2) { return(arg1 * arg2); }
+int32 int4div(int32 arg1, int32 arg2) { return(arg1 / arg2); }
+int32 int4inc(int32 arg) { return(arg + (int32)1); }
+
+int16 int2um(int16 arg) { return(-arg); }
+int16 int2pl(int16 arg1, int16 arg2) { return(arg1 + arg2); }
+int16 int2mi(int16 arg1, int16 arg2) { return(arg1 - arg2); }
+int16 int2mul(int16 arg1, int16 arg2) { return(arg1 * arg2); }
+int16 int2div(int16 arg1, int16 arg2) { return(arg1 / arg2); }
+int16 int2inc(int16 arg) { return(arg + (int16)1); }
+
+int32 int24pl(int32 arg1, int32 arg2) { return(arg1 + arg2); }
+int32 int24mi(int32 arg1, int32 arg2) { return(arg1 - arg2); }
+int32 int24mul(int32 arg1, int32 arg2) { return(arg1 * arg2); }
+int32 int24div(int32 arg1, int32 arg2) { return(arg1 / arg2); }
+
+int32 int42pl(int32 arg1, int32 arg2) { return(arg1 + arg2); }
+int32 int42mi(int32 arg1, int32 arg2) { return(arg1 - arg2); }
+int32 int42mul(int32 arg1, int32 arg2) { return(arg1 * arg2); }
+int32 int42div(int32 arg1, int32 arg2) { return(arg1 / arg2); }
+
+/*
+ * int[24]mod - returns arg1 mod arg2
+ */
+int32 int4mod(int32 arg1, int32 arg2) { return(arg1 % arg2); }
+int32 int2mod(int16 arg1, int16 arg2) { return(arg1 % arg2); }
+int32 int24mod(int32 arg1, int32 arg2) { return(arg1 % arg2); }
+int32 int42mod(int32 arg1, int32 arg2) { return(arg1 % arg2); }
+
+/*
+ * int[24]fac - returns arg1!
+ */
+int32 int4fac(int32 arg1)
+{
+ int32 result;
+
+ if (arg1 < 1)
+ result = 0;
+ else
+ for (result = 1; arg1 > 0; --arg1)
+ result *= arg1;
+ return(result);
+}
+
+int32 int2fac(int16 arg1)
+{
+ int16 result;
+
+ if (arg1 < 1)
+ result = 0;
+ else
+ for (result = 1; arg1 > 0; --arg1)
+ result *= arg1;
+ return(result);
+}
+
+int16 int2larger(int16 arg1, int16 arg2)
+{
+ return ((arg1 > arg2) ? arg1 : arg2);
+}
+
+int16 int2smaller(int16 arg1, int16 arg2)
+{
+ return ((arg1 < arg2) ? arg1 : arg2);
+}
+
+int32 int4larger(int32 arg1, int32 arg2)
+{
+ return ((arg1 > arg2) ? arg1 : arg2);
+}
+
+int32 int4smaller(int32 arg1, int32 arg2)
+{
+ return ((arg1 < arg2) ? arg1 : arg2);
+}
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