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Diffstat (limited to 'libm/src/w_cosh.c')
-rw-r--r-- | libm/src/w_cosh.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/libm/src/w_cosh.c b/libm/src/w_cosh.c new file mode 100644 index 0000000..1848726 --- /dev/null +++ b/libm/src/w_cosh.c @@ -0,0 +1,38 @@ + +/* @(#)w_cosh.c 1.3 95/01/18 */ +/* + * ==================================================== + * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. + * + * Developed at SunSoft, 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 "fdlibm.h" + +#ifdef __STDC__ + double cosh(double x) /* wrapper cosh */ +#else + double cosh(x) /* wrapper cosh */ + double x; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_cosh(x); +#else + double z; + z = __ieee754_cosh(x); + if(_LIB_VERSION == _IEEE_ || isnan(x)) return z; + if(fabs(x)>7.10475860073943863426e+02) { + return __kernel_standard(x,x,5); /* cosh overflow */ + } else + return z; +#endif +} |