/usr/share/doc/firebird3.0-common-doc/examples/functions.c is in firebird3.0-examples 3.0.2.32703.ds4-11ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | /*
* PROGRAM: InterBase Access Method
* MODULE: functions.c
* DESCRIPTION: External entrypoint definitions
*
* The contents of this file are subject to the Interbase Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy
* of the License at http://www.Inprise.com/IPL.html
*
* Software distributed under the License is distributed on an
* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
* or implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code was created by Inprise Corporation
* and its predecessors. Portions created by Inprise Corporation are
* Copyright (C) Inprise Corporation.
*
* All Rights Reserved.
* Contributor(s): ______________________________________.
*/
typedef int (*FUN_PTR)();
typedef struct {
char *fn_module;
char *fn_entrypoint;
FUN_PTR fn_function;
} FN;
static test();
extern char *fn_lower_c();
extern char *fn_strcat();
extern char *fn_substr();
extern char *fn_trim();
extern char *fn_trunc();
extern int fn_doy();
extern short *fn_moy();
extern char *fn_dow();
extern char *fn_sysdate();
extern int fn_add2();
extern double fn_mul();
extern double fn_fact();
extern double fn_abs();
extern double fn_max();
extern double fn_sqrt();
extern int fn_blob_linecount();
extern int fn_blob_bytecount();
extern char *fn_blob_substr();
static FN isc_functions [] = {
"test_module", "test_function", test,
"FUNCLIB", "fn_lower_c", (FUN_PTR) fn_lower_c,
"FUNCLIB", "fn_strcat", (FUN_PTR) fn_strcat,
"FUNCLIB", "fn_substr", (FUN_PTR) fn_substr,
"FUNCLIB", "fn_trim", (FUN_PTR) fn_trim,
"FUNCLIB", "fn_trunc", (FUN_PTR) fn_trunc,
"FUNCLIB", "fn_doy", (FUN_PTR) fn_doy,
"FUNCLIB", "fn_moy", (FUN_PTR) fn_moy,
"FUNCLIB", "fn_dow", (FUN_PTR) fn_dow,
"FUNCLIB", "fn_sysdate", (FUN_PTR) fn_sysdate,
"FUNCLIB", "fn_add2", (FUN_PTR) fn_add2,
"FUNCLIB", "fn_mul", (FUN_PTR) fn_mul,
"FUNCLIB", "fn_fact", (FUN_PTR) fn_fact,
"FUNCLIB", "fn_abs", (FUN_PTR) fn_abs,
"FUNCLIB", "fn_max", (FUN_PTR) fn_max,
"FUNCLIB", "fn_sqrt", (FUN_PTR) fn_sqrt,
"FUNCLIB", "fn_blob_linecount", (FUN_PTR) fn_blob_linecount,
"FUNCLIB", "fn_blob_bytecount", (FUN_PTR) fn_blob_bytecount,
"FUNCLIB", "fn_blob_substr", (FUN_PTR) fn_blob_substr,
0, 0, 0};
#ifdef SHLIB_DEFS
#define strcmp (*_libfun_strcmp)
#define sprintf (*_libfun_sprintf)
extern int strcmp();
extern int sprintf();
#endif
FUN_PTR FUNCTIONS_entrypoint (module, entrypoint)
char *module;
char *entrypoint;
{
/**************************************
*
* F U N C T I O N S _ e n t r y p o i n t
*
**************************************
*
* Functional description
* Lookup function in hardcoded table. The module and
* entrypoint names are null terminated, but may contain
* insignificant trailing blanks.
*
**************************************/
FN *function;
char *p, temp [64], *ep;
p = temp;
while (*module && *module != ' ')
*p++ = *module++;
*p++ = 0;
ep = p;
while (*entrypoint && *entrypoint != ' ')
*p++ = *entrypoint++;
*p = 0;
for (function = isc_functions; function->fn_module; ++function)
if (!strcmp (temp, function->fn_module) && !strcmp (ep, function->fn_entrypoint))
return function->fn_function;
return 0;
}
static test (n, result)
int n;
char *result;
{
/**************************************
*
* t e s t
*
**************************************
*
* Functional description
* Sample extern function. Defined in database by:
*
* define function test module_name "test_module" entry_point "test_function"
* long by value,
* char [20] by reference return_argument;
*
**************************************/
char *end;
sprintf (result, "%d is a number", n);
end = result + 20;
while (*result)
result++;
while (result < end)
*result++ = ' ';
}
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