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/ceilf.c | 27 ++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 lib/mlibc/options/ansi/musl-generic-math/ceilf.c (limited to 'lib/mlibc/options/ansi/musl-generic-math/ceilf.c') diff --git a/lib/mlibc/options/ansi/musl-generic-math/ceilf.c b/lib/mlibc/options/ansi/musl-generic-math/ceilf.c new file mode 100644 index 0000000..869835f --- /dev/null +++ b/lib/mlibc/options/ansi/musl-generic-math/ceilf.c @@ -0,0 +1,27 @@ +#include "libm.h" + +float ceilf(float x) +{ + union {float f; uint32_t i;} u = {x}; + int e = (int)(u.i >> 23 & 0xff) - 0x7f; + uint32_t m; + + if (e >= 23) + return x; + if (e >= 0) { + m = 0x007fffff >> e; + if ((u.i & m) == 0) + return x; + FORCE_EVAL(x + 0x1p120f); + if (u.i >> 31 == 0) + u.i += m; + u.i &= ~m; + } else { + FORCE_EVAL(x + 0x1p120f); + if (u.i >> 31) + u.f = -0.0; + else if (u.i << 1) + u.f = 1.0; + } + return u.f; +} -- cgit v1.2.3