From 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 12 Feb 2011 00:22:29 -0500 Subject: initial check-in, version 0.5.0 --- src/math/__fpclassifyl.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 src/math/__fpclassifyl.c (limited to 'src/math/__fpclassifyl.c') diff --git a/src/math/__fpclassifyl.c b/src/math/__fpclassifyl.c new file mode 100644 index 00000000..4f93bef1 --- /dev/null +++ b/src/math/__fpclassifyl.c @@ -0,0 +1,16 @@ +#include +#include + +/* FIXME: move this to arch-specific file */ +int __fpclassifyl(long double __x) +{ + union { + long double __ld; + __uint16_t __hw[5]; + __uint64_t __m; + } __y = { __x }; + int __ee = __y.__hw[4]&0x7fff; + if (!__ee) return __y.__m ? FP_SUBNORMAL : FP_ZERO; + if (__ee==0x7fff) return __y.__m ? FP_NAN : FP_INFINITE; + return FP_NORMAL; +} -- cgit v1.2.1