Ruby 2.7.6p219 (2022-04-12 revision c9c2245c0a25176072e02db9254f0e0c84c805cd)
nan.c
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1#include "ruby/missing.h"
2#include <assert.h>
3#include <stdlib.h>
4#include <string.h>
5
6double
7nan(const char *spec)
8{
9#if 0
10 /* FIXME: we have not yet seen any situation this is
11 * necessary. Please write a proper implementation that
12 * covers this branch. */
13 if (spec && spec[0]) {
14 double generated_nan;
15 int len = snprintf(NULL, 0, "NAN(%s)", spec);
16 char *buf = malloc(len + 1); /* +1 for NUL */
17 sprintf(buf, "NAN(%s)", spec);
18 generated_nan = strtod(buf, NULL);
19 free(buf);
20 return generated_nan;
21 }
22 else
23#endif
24 {
25 assert(!spec || !spec[0]);
26 return (double)NAN;
27 }
28}
#define free(x)
Definition: dln.c:52
double nan(const char *spec)
Definition: nan.c:7
#define NULL
int sprintf(char *__restrict__, const char *__restrict__,...) __attribute__((__format__(__printf__
void * malloc(size_t) __attribute__((__malloc__)) __attribute__((__warn_unused_result__)) __attribute__((__alloc_size__(1)))
int snprintf(char *__restrict__, size_t, const char *__restrict__,...) __attribute__((__format__(__printf__
__inline__ const void *__restrict__ size_t len
#define NAN
struct rb_call_cache buf
#define assert
#define strtod(s, e)
Definition: util.h:76