51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
|
// A little test program to group compile tests for standard C99 features
|
||
|
|
// we expect for mpg123 code. It is silly testing all headers and types
|
||
|
|
// individually, and unnecessarily slow. We mention all of the expected
|
||
|
|
// ones here and still fail early with a useful error for the user at
|
||
|
|
// configure stage.
|
||
|
|
|
||
|
|
/* This also nicely documents which features are expected. */
|
||
|
|
|
||
|
|
// Basic stuff. exit()
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
// For the fixed-width integer types.
|
||
|
|
#include <stdint.h>
|
||
|
|
// For PRI macros.
|
||
|
|
#include <inttypes.h>
|
||
|
|
// ptrdiff_t, size_t
|
||
|
|
#include <stddef.h>
|
||
|
|
// _MAX/_MIN
|
||
|
|
#include <limits.h>
|
||
|
|
// printf
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
// strcmp, strlen
|
||
|
|
// remember: strcasecmp is POSIX, strings.h (sometimes)
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
int main()
|
||
|
|
{
|
||
|
|
const char *s = "some test string";
|
||
|
|
// Mention some types we want to use.
|
||
|
|
size_t st = 1337;
|
||
|
|
ptrdiff_t pt = 0x3443; // used instead of non-standard ssize_t
|
||
|
|
uint16_t u16 = 42;
|
||
|
|
uint32_t u32 = 23<<20;
|
||
|
|
int16_t i16 = 33;
|
||
|
|
int32_t i32 = -1*(21L<<20);
|
||
|
|
int64_t i64 = -1*(34L<<40);
|
||
|
|
uintmax_t um = 304203;
|
||
|
|
intmax_t im = -23434;
|
||
|
|
printf( "formats: "
|
||
|
|
"%s" " %s" " %s" " %s" " %s" " %s" " %s" " %s" " %s " "\n"
|
||
|
|
, "zu", PRIiMAX, PRIu16, PRIu32, PRIi16, PRIi32, PRIi64, PRIuMAX, PRIiMAX );
|
||
|
|
printf( "values:"
|
||
|
|
" %zu" " %"PRIiMAX " %"PRIu16 " %"PRIu32 " %"PRIi16 " %"PRIi32 " %"PRIi64 " %"PRIuMAX " %"PRIiMAX "\n"
|
||
|
|
, st, pt, u16, u32, i16, i32, i64, um, im );
|
||
|
|
printf("%ld <= long <= %ld\n", LONG_MIN, LONG_MAX);
|
||
|
|
printf( "The test string is %zu bytes long and compares to frick as %d\n"
|
||
|
|
, strlen(s), strcmp(s, "frick") );
|
||
|
|
exit(EXIT_SUCCESS);
|
||
|
|
}
|