From 885f5974cdf65b59415837ae97f5a14ef1350670 Mon Sep 17 00:00:00 2001 From: Kacper Date: Tue, 9 Dec 2025 19:20:15 +0100 Subject: feat: add gzip and new headers --- lib/libm/coshf.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 lib/libm/coshf.c (limited to 'lib/libm/coshf.c') diff --git a/lib/libm/coshf.c b/lib/libm/coshf.c new file mode 100644 index 00000000..451e6928 --- /dev/null +++ b/lib/libm/coshf.c @@ -0,0 +1,36 @@ +#include "libm.h" + +float coshf(float x) +{ + union { + float f; + uint32_t i; + } u = { .f = x }; + uint32_t w; + float t; + + /* |x| */ + u.i &= 0x7fffffff; + x = u.f; + w = u.i; + + /* |x| < log(2) */ + if (w < 0x3f317217) { + if (w < 0x3f800000 - (12 << 23)) { + FORCE_EVAL(x + 0x1p120f); + return 1; + } + t = expm1f(x); + return 1 + t * t / (2 * (1 + t)); + } + + /* |x| < log(FLT_MAX) */ + if (w < 0x42b17217) { + t = expf(x); + return 0.5f * (t + 1 / t); + } + + /* |x| > log(FLT_MAX) or nan */ + t = __expo2f(x, 1.0f); + return t; +} -- cgit v1.2.3