diff options
Diffstat (limited to 'sysdeps/libm-i387/e_asin.S')
| -rw-r--r-- | sysdeps/libm-i387/e_asin.S | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sysdeps/libm-i387/e_asin.S b/sysdeps/libm-i387/e_asin.S new file mode 100644 index 0000000000..dfcd7bce95 --- /dev/null +++ b/sysdeps/libm-i387/e_asin.S @@ -0,0 +1,19 @@ +/* + * Written by J.T. Conklin <jtc@netbsd.org>. + * Public domain. + */ + +#include <machine/asm.h> + +RCSID("$NetBSD: e_asin.S,v 1.4 1995/05/08 23:45:40 jtc Exp $") + +/* asin = atan (x / sqrt(1 - x^2)) */ +ENTRY(__ieee754_asin) + fldl 4(%esp) /* x */ + fst %st(1) + fmul %st(0) /* x^2 */ + fld1 + fsubp /* 1 - x^2 */ + fsqrt /* sqrt (1 - x^2) */ + fpatan + ret |