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/copysignl.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 lib/libc/src/musl-math/copysignl.c (limited to 'lib/libc/src/musl-math/copysignl.c') diff --git a/lib/libc/src/musl-math/copysignl.c b/lib/libc/src/musl-math/copysignl.c new file mode 100644 index 0000000..9dd933c --- /dev/null +++ b/lib/libc/src/musl-math/copysignl.c @@ -0,0 +1,16 @@ +#include "libm.h" + +#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024 +long double copysignl(long double x, long double y) +{ + return copysign(x, y); +} +#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384 +long double copysignl(long double x, long double y) +{ + union ldshape ux = {x}, uy = {y}; + ux.i.se &= 0x7fff; + ux.i.se |= uy.i.se & 0x8000; + return ux.f; +} +#endif -- cgit v1.2.3