diff options
Diffstat (limited to 'newlib/libm/math/wf_acos.c')
| -rw-r--r-- | newlib/libm/math/wf_acos.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/newlib/libm/math/wf_acos.c b/newlib/libm/math/wf_acos.c new file mode 100644 index 00000000000..8a1037441b7 --- /dev/null +++ b/newlib/libm/math/wf_acos.c @@ -0,0 +1,69 @@ +/* wf_acos.c -- float version of w_acos.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. + * ==================================================== + */ + +/* + * wrap_acosf(x) + */ + +#include "fdlibm.h" +#include <errno.h> + +#ifdef _HAVE_STDC + float acosf(float x) /* wrapper acosf */ +#else + float acosf(x) /* wrapper acosf */ + float x; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_acosf(x); +#else + float z; + struct exception exc; + z = __ieee754_acosf(x); + if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z; + if(fabsf(x)>(float)1.0) { + /* acosf(|x|>1) */ + exc.type = DOMAIN; + exc.name = "acosf"; + exc.err = 0; + exc.arg1 = exc.arg2 = (double)x; + exc.retval = 0.0; + if (_LIB_VERSION == _POSIX_) + errno = EDOM; + else if (!matherr(&exc)) { + errno = EDOM; + } + if (exc.err != 0) + errno = exc.err; + return (float)exc.retval; + } else + return z; +#endif +} + +#ifdef _DOUBLE_IS_32BITS + +#ifdef __STDC__ + double acos(double x) +#else + double acos(x) + double x; +#endif +{ + return (double) acosf((float) x); +} + +#endif /* defined(_DOUBLE_IS_32BITS) */ |