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Diffstat (limited to 'newlib/libm/math/wf_cosh.c')
| -rw-r--r-- | newlib/libm/math/wf_cosh.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/newlib/libm/math/wf_cosh.c b/newlib/libm/math/wf_cosh.c new file mode 100644 index 000000000..82b76f3c4 --- /dev/null +++ b/newlib/libm/math/wf_cosh.c @@ -0,0 +1,78 @@ +/* wf_cosh.c -- float version of w_cosh.c. + * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. + */ + +/* + * ==================================================== + * 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 coshf(x) + */ + +#include "fdlibm.h" +#include <errno.h> + +#ifdef __STDC__ + float coshf(float x) /* wrapper coshf */ +#else + float coshf(x) /* wrapper coshf */ + float x; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_coshf(x); +#else + float z; + struct exception exc; + z = __ieee754_coshf(x); + if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z; + if(fabsf(x)>(float)8.9415985107e+01) { + /* coshf(finite) overflow */ +#ifndef HUGE_VAL +#define HUGE_VAL inf + double inf = 0.0; + + SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */ +#endif + exc.type = OVERFLOW; + exc.name = "coshf"; + exc.err = 0; + exc.arg1 = exc.arg2 = (double)x; + if (_LIB_VERSION == _SVID_) + exc.retval = HUGE; + else + exc.retval = HUGE_VAL; + if (_LIB_VERSION == _POSIX_) + errno = ERANGE; + else if (!matherr(&exc)) { + errno = ERANGE; + } + if (exc.err != 0) + errno = exc.err; + return (float)exc.retval; + } else + return z; +#endif +} + +#ifdef _DOUBLE_IS_32BITS + +#ifdef __STDC__ + double cosh(double x) +#else + double cosh(x) + double x; +#endif +{ + return (double) coshf((float) x); +} + +#endif /* defined(_DOUBLE_IS_32BITS) */ |