diff options
Diffstat (limited to 'src/stdlib/strtod.c')
-rw-r--r-- | src/stdlib/strtod.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/src/stdlib/strtod.c b/src/stdlib/strtod.c index 388058fe..ecfabdf1 100644 --- a/src/stdlib/strtod.c +++ b/src/stdlib/strtod.c @@ -1,6 +1,34 @@ #include <stdlib.h> +#include "shgetc.h" +#include "floatscan.h" +#include "stdio_impl.h" + +static long double strtox(const char *s, char **p, int prec) +{ + char *t = (char *)s; + while (isspace(*t)) t++; + FILE f = { + .buf = (void *)t, .rpos = (void *)t, + .rend = (void *)-1, .lock = -1 + }; + shlim(&f, 0); + long double y = __floatscan(&f, -1, prec, 1); + off_t cnt = shcnt(&f); + if (p) *p = cnt ? t + cnt : (char *)s; + return y; +} + +float strtof(const char *s, char **p) +{ + return strtox(s, p, 0); +} double strtod(const char *s, char **p) { - return strtold(s, p); + return strtox(s, p, 1); +} + +long double strtold(const char *s, char **p) +{ + return strtox(s, p, 2); } |