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Merge "legacy strtof inline: don't set errno for "inf""

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Ryan Prichard 2022-05-04 22:47:08 +00:00 committed by Gerrit Code Review
commit 0e91012d42
1 changed files with 3 additions and 5 deletions
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8
libc/include/android/legacy_stdlib_inlines.h
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@ -57,13 +57,11 @@ __END_DECLS
__BEGIN_DECLS
static __inline float strtof(const char* nptr, char** endptr) {
// N.B. Double-rounding makes this function incorrect for some inputs.
double d = strtod(nptr, endptr);
if (d > FLT_MAX) {
if (__builtin_isfinite(d) && __builtin_fabs(d) > FLT_MAX) {
errno = ERANGE;
return __builtin_huge_valf();
} else if (d < -FLT_MAX) {
errno = ERANGE;
return -__builtin_huge_valf();
return __builtin_copysign(__builtin_huge_valf(), d);
}
return __BIONIC_CAST(static_cast, float, d);
}