From 30634165980deaeead9f4e71e0ff6a5c9d897776 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Mon, 14 Jul 2025 22:39:34 -0400 Subject: usr: libc: Add math.h + musl math impl port Signed-off-by: Ian Moffett --- lib/libc/src/musl-math/__signbitf.c | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 lib/libc/src/musl-math/__signbitf.c (limited to 'lib/libc/src/musl-math/__signbitf.c') diff --git a/lib/libc/src/musl-math/__signbitf.c b/lib/libc/src/musl-math/__signbitf.c new file mode 100644 index 0000000..40ad3cf --- /dev/null +++ b/lib/libc/src/musl-math/__signbitf.c @@ -0,0 +1,11 @@ +#include "libm.h" + +// FIXME: macro in math.h +int __signbitf(float x) +{ + union { + float f; + uint32_t i; + } y = { x }; + return y.i>>31; +} -- cgit v1.2.3