source:
azure_iot_hub_mbedtls/trunk/musl-1.1.18/src/stdlib/strtod.c
Last change on this file was 398, checked in by , 5 years ago | |
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File size: 857 bytes |
Rev | Line | |
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[398] | 1 | #include <stdlib.h> |
2 | #include "shgetc.h" | |
3 | #include "floatscan.h" | |
4 | #include "stdio_impl.h" | |
5 | #include "libc.h" | |
6 | ||
7 | static long double strtox(const char *s, char **p, int prec) | |
8 | { | |
9 | FILE f = { | |
10 | .buf = (void *)s, .rpos = (void *)s, | |
11 | .rend = (void *)-1, .lock = -1 | |
12 | }; | |
13 | shlim(&f, 0); | |
14 | long double y = __floatscan(&f, prec, 1); | |
15 | off_t cnt = shcnt(&f); | |
16 | if (p) *p = cnt ? (char *)s + cnt : (char *)s; | |
17 | return y; | |
18 | } | |
19 | ||
20 | float strtof(const char *restrict s, char **restrict p) | |
21 | { | |
22 | return strtox(s, p, 0); | |
23 | } | |
24 | ||
25 | double strtod(const char *restrict s, char **restrict p) | |
26 | { | |
27 | return strtox(s, p, 1); | |
28 | } | |
29 | ||
30 | long double strtold(const char *restrict s, char **restrict p) | |
31 | { | |
32 | return strtox(s, p, 2); | |
33 | } | |
34 | ||
35 | weak_alias(strtof, strtof_l); | |
36 | weak_alias(strtod, strtod_l); | |
37 | weak_alias(strtold, strtold_l); | |
38 | weak_alias(strtof, __strtof_l); | |
39 | weak_alias(strtod, __strtod_l); | |
40 | weak_alias(strtold, __strtold_l); |
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