diff options
Diffstat (limited to 'newlib/libc/machine/i386/f_atan2.S')
| -rw-r--r-- | newlib/libc/machine/i386/f_atan2.S | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/newlib/libc/machine/i386/f_atan2.S b/newlib/libc/machine/i386/f_atan2.S new file mode 100644 index 0000000..c6f3a7a --- /dev/null +++ b/newlib/libc/machine/i386/f_atan2.S @@ -0,0 +1,32 @@ +/* + * ==================================================== + * Copyright (C) 1998 by Cygnus Solutions. All rights reserved. + * + * Permission to use, copy, modify, and distribute this + * software is freely granted, provided that this notice + * is preserved. + * ==================================================== + */ + +/* +Fast version of atan2 using Intel float instructions. + + double _f_atan2 (double y, double x); + +Function computes arctan ( y / x ). +There is no error checking or setting of errno. +*/ + + #include "i386mach.h" + + .global SYM (_f_atan2) + +SYM (_f_atan2): + pushl ebp + movl esp,ebp + fldl 8(ebp) + fldl 16(ebp) + fpatan + + leave + ret |