diff options
Diffstat (limited to 'sysdeps/libm-i387/s_tan.S')
| -rw-r--r-- | sysdeps/libm-i387/s_tan.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/sysdeps/libm-i387/s_tan.S b/sysdeps/libm-i387/s_tan.S new file mode 100644 index 0000000000..9474c8cfc2 --- /dev/null +++ b/sysdeps/libm-i387/s_tan.S @@ -0,0 +1,29 @@ +/* + * Written by J.T. Conklin <jtc@netbsd.org>. + * Public domain. + */ + +#include <machine/asm.h> + +RCSID("$NetBSD: s_tan.S,v 1.5 1995/05/09 00:30:00 jtc Exp $") + +ENTRY(__tan) + fldl 4(%esp) + fptan + fnstsw %ax + andw $0x400,%ax + jnz 1f + fstp %st(0) + ret +1: fldpi + fadd %st(0) + fxch %st(1) +2: fprem1 + fstsw %ax + andw $0x400,%ax + jnz 2b + fstp %st(1) + fptan + fstp %st(0) + ret +weak_alias (__tan, tan) |