diff options
Diffstat (limited to 'libm/w_cosh.c')
| -rw-r--r-- | libm/w_cosh.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/libm/w_cosh.c b/libm/w_cosh.c new file mode 100644 index 000000000..d9a6da3df --- /dev/null +++ b/libm/w_cosh.c @@ -0,0 +1,34 @@ +/* Optimizations bu Ulrich Drepper <drepper@gmail.com>, 2011 */ +/* + * ==================================================== + * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. + * + * Developed at SunPro, a Sun Microsystems, Inc. business. + * Permission to use, copy, modify, and distribute this + * software is freely granted, provided that this notice + * is preserved. + * ==================================================== + */ + +/* + * wrapper cosh(x) + */ + +#include <math.h> +#include "math_private.h" + +double +cosh (double x) +{ +#if __UCLIBC_HAS_FENV__ + double z = __ieee754_cosh (x); + if (__builtin_expect (!isfinite (z), 0) && isfinite (x) + && _LIB_VERSION != _IEEE_) + return __kernel_standard (x, x, 5); /* cosh overflow */ + + return z; +#else + return __ieee754_cosh (x); +#endif +} +libm_hidden_def(cosh) |