diff options
Diffstat (limited to 'lib/mlibc/options/ansi/musl-generic-math/acosh.c')
| -rw-r--r-- | lib/mlibc/options/ansi/musl-generic-math/acosh.c | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/lib/mlibc/options/ansi/musl-generic-math/acosh.c b/lib/mlibc/options/ansi/musl-generic-math/acosh.c deleted file mode 100644 index badbf90..0000000 --- a/lib/mlibc/options/ansi/musl-generic-math/acosh.c +++ /dev/null @@ -1,24 +0,0 @@ -#include "libm.h" - -#if FLT_EVAL_METHOD==2 -#undef sqrt -#define sqrt sqrtl -#endif - -/* acosh(x) = log(x + sqrt(x*x-1)) */ -double acosh(double x) -{ - union {double f; uint64_t i;} u = {.f = x}; - unsigned e = u.i >> 52 & 0x7ff; - - /* x < 1 domain error is handled in the called functions */ - - if (e < 0x3ff + 1) - /* |x| < 2, up to 2ulp error in [1,1.125] */ - return log1p(x-1 + sqrt((x-1)*(x-1)+2*(x-1))); - if (e < 0x3ff + 26) - /* |x| < 0x1p26 */ - return log(2*x - 1/(x+sqrt(x*x-1))); - /* |x| >= 0x1p26 or nan */ - return log(x) + 0.693147180559945309417232121458176568; -} |