From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001 From: Vladimir Azarov Date: Tue, 1 Oct 2024 15:47:05 +0200 Subject: Initial version --- src/math/__signbit.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 src/math/__signbit.c (limited to 'src/math/__signbit.c') diff --git a/src/math/__signbit.c b/src/math/__signbit.c new file mode 100644 index 0000000..e700b6b --- /dev/null +++ b/src/math/__signbit.c @@ -0,0 +1,13 @@ +#include "libm.h" + +// FIXME: macro in math.h +int __signbit(double x) +{ + union { + double d; + uint64_t i; + } y = { x }; + return y.i>>63; +} + + -- cgit v1.2.3