diff options
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/sysdeps/linux/i386/bits/mathinline.h | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/libc/sysdeps/linux/i386/bits/mathinline.h b/libc/sysdeps/linux/i386/bits/mathinline.h index ca7277d76..5caf73353 100644 --- a/libc/sysdeps/linux/i386/bits/mathinline.h +++ b/libc/sysdeps/linux/i386/bits/mathinline.h @@ -713,11 +713,22 @@ __inline_mathcodeNP2 (drem, __x, __y, \ __MATH_INLINE int __NTH (__finite (double __x)) { - return (__extension__ - (((((union { double __d; int __i[2]; }) {__d: __x}).__i[1] - | 0x800fffffu) + 1) >> 31)); + union { double __d; int __i[2]; } u; + u.__d = __x; + /* Finite numbers have at least one zero bit in exponent. */ + /* All other numbers will result in 0xffffffff after OR: */ + return (u.__i[1] | 0x800fffff) != 0xffffffff; } +__MATH_INLINE int +__NTH (__finitef (float __x)) +{ + union { float __d; int __i; } u; + u.__d = __x; + return (u.__i | 0x807fffff) != 0xffffffff; +} + + /* Miscellaneous functions */ # ifdef __FAST_MATH__ __inline_mathcode (__coshm1, __x, \ |