diff options
author | Pixel <pixel@nobis-crew.org> | 2011-02-05 11:06:07 -0800 |
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committer | Pixel <pixel@nobis-crew.org> | 2011-02-05 11:06:07 -0800 |
commit | 8b1fadd6a89f12cbc81c5d621a75b91dd9eedec2 (patch) | |
tree | 0b130b02101391e206c07cb0a1c9031bb4d27f21 /libm/src/w_atan2.c | |
parent | 4830af498e2d3a5440e65c63a3595b91f1cd4ac9 (diff) |
Adding Sun's fdlibm, and libnix's scanf, tweaked to become an xscanf. Adding a few more libc inlined also.
Diffstat (limited to 'libm/src/w_atan2.c')
-rw-r--r-- | libm/src/w_atan2.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/libm/src/w_atan2.c b/libm/src/w_atan2.c new file mode 100644 index 0000000..80ad39b --- /dev/null +++ b/libm/src/w_atan2.c @@ -0,0 +1,40 @@ + +/* @(#)w_atan2.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 atan2(y,x) + */ + +#include "fdlibm.h" + + +#ifdef __STDC__ + double atan2(double y, double x) /* wrapper atan2 */ +#else + double atan2(y,x) /* wrapper atan2 */ + double y,x; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_atan2(y,x); +#else + double z; + z = __ieee754_atan2(y,x); + if(_LIB_VERSION == _IEEE_||isnan(x)||isnan(y)) return z; + if(x==0.0&&y==0.0) { + return __kernel_standard(y,x,3); /* atan2(+-0,+-0) */ + } else + return z; +#endif +} |