From bd5969fc876a10b18613302db7087ef3c40f18e1 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Thu, 7 Mar 2024 17:28:00 -0500 Subject: lib: Add mlibc Signed-off-by: Ian Moffett --- lib/mlibc/options/ansi/musl-generic-math/__signbit.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 lib/mlibc/options/ansi/musl-generic-math/__signbit.c (limited to 'lib/mlibc/options/ansi/musl-generic-math/__signbit.c') diff --git a/lib/mlibc/options/ansi/musl-generic-math/__signbit.c b/lib/mlibc/options/ansi/musl-generic-math/__signbit.c new file mode 100644 index 0000000..e700b6b --- /dev/null +++ b/lib/mlibc/options/ansi/musl-generic-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