diff options
author | Ian Moffett <ian@osmora.org> | 2024-03-07 17:28:52 -0500 |
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committer | Ian Moffett <ian@osmora.org> | 2024-03-07 18:24:51 -0500 |
commit | f5e48e94a2f4d4bbd6e5628c7f2afafc6dbcc459 (patch) | |
tree | 93b156621dc0303816b37f60ba88051b702d92f6 /lib/mlibc/options/ansi/musl-generic-math/atanhl.c | |
parent | bd5969fc876a10b18613302db7087ef3c40f18e1 (diff) |
build: Build mlibc + add distclean target
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'lib/mlibc/options/ansi/musl-generic-math/atanhl.c')
-rw-r--r-- | lib/mlibc/options/ansi/musl-generic-math/atanhl.c | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/lib/mlibc/options/ansi/musl-generic-math/atanhl.c b/lib/mlibc/options/ansi/musl-generic-math/atanhl.c deleted file mode 100644 index 87cd1cd..0000000 --- a/lib/mlibc/options/ansi/musl-generic-math/atanhl.c +++ /dev/null @@ -1,35 +0,0 @@ -#include "libm.h" - -#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024 -long double atanhl(long double x) -{ - return atanh(x); -} -#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384 -/* atanh(x) = log((1+x)/(1-x))/2 = log1p(2x/(1-x))/2 ~= x + x^3/3 + o(x^5) */ -long double atanhl(long double x) -{ - union ldshape u = {x}; - unsigned e = u.i.se & 0x7fff; - unsigned s = u.i.se >> 15; - - /* |x| */ - u.i.se = e; - x = u.f; - - if (e < 0x3ff - 1) { - if (e < 0x3ff - LDBL_MANT_DIG/2) { - /* handle underflow */ - if (e == 0) - FORCE_EVAL((float)x); - } else { - /* |x| < 0.5, up to 1.7ulp error */ - x = 0.5*log1pl(2*x + 2*x*x/(1-x)); - } - } else { - /* avoid overflow */ - x = 0.5*log1pl(2*(x/(1-x))); - } - return s ? -x : x; -} -#endif |