From f5e48e94a2f4d4bbd6e5628c7f2afafc6dbcc459 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Thu, 7 Mar 2024 17:28:52 -0500 Subject: build: Build mlibc + add distclean target Signed-off-by: Ian Moffett --- lib/mlibc/options/ansi/musl-generic-math/atanhf.c | 28 ----------------------- 1 file changed, 28 deletions(-) delete mode 100644 lib/mlibc/options/ansi/musl-generic-math/atanhf.c (limited to 'lib/mlibc/options/ansi/musl-generic-math/atanhf.c') diff --git a/lib/mlibc/options/ansi/musl-generic-math/atanhf.c b/lib/mlibc/options/ansi/musl-generic-math/atanhf.c deleted file mode 100644 index 65f07c0..0000000 --- a/lib/mlibc/options/ansi/musl-generic-math/atanhf.c +++ /dev/null @@ -1,28 +0,0 @@ -#include "libm.h" - -/* atanh(x) = log((1+x)/(1-x))/2 = log1p(2x/(1-x))/2 ~= x + x^3/3 + o(x^5) */ -float atanhf(float x) -{ - union {float f; uint32_t i;} u = {.f = x}; - unsigned s = u.i >> 31; - float_t y; - - /* |x| */ - u.i &= 0x7fffffff; - y = u.f; - - if (u.i < 0x3f800000 - (1<<23)) { - if (u.i < 0x3f800000 - (32<<23)) { - /* handle underflow */ - if (u.i < (1<<23)) - FORCE_EVAL((float)(y*y)); - } else { - /* |x| < 0.5, up to 1.7ulp error */ - y = 0.5f*log1pf(2*y + 2*y*y/(1-y)); - } - } else { - /* avoid overflow */ - y = 0.5f*log1pf(2*(y/(1-y))); - } - return s ? -y : y; -} -- cgit v1.2.3