blob: 7253a892d50daaaf88b7be11e60526753ff77ea1 [file] [log] [blame]
#include "lib.h"
#include "allocate.h"
#include "compat/mmap-blob.c"
#include <floatingpoint.h>
#include <limits.h>
#include <errno.h>
long double string_to_ld(const char *str, char **endptr)
{
long double res;
decimal_record dr;
enum decimal_string_form form;
decimal_mode dm;
fp_exception_field_type excp;
char *echar;
string_to_decimal ((char **)&str, INT_MAX, 0,
&dr, &form, &echar);
if (endptr) *endptr = (char *)str;
if (form == invalid_form) {
errno = EINVAL;
return 0.0;
}
dm.rd = fp_nearest;
decimal_to_quadruple (&res, &dm, &dr, &excp);
if (excp & ((1 << fp_overflow) | (1 << fp_underflow)))
errno = ERANGE;
return res;
}