From abfbdde177c3a7155070dda1b2cdc8292054cc26 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 14 Jul 1999 00:54:57 +0000 Subject: Update. --- sysdeps/i386/fpu/e_acos.S | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 sysdeps/i386/fpu/e_acos.S (limited to 'sysdeps/i386/fpu/e_acos.S') diff --git a/sysdeps/i386/fpu/e_acos.S b/sysdeps/i386/fpu/e_acos.S new file mode 100644 index 0000000000..b9d07b1091 --- /dev/null +++ b/sysdeps/i386/fpu/e_acos.S @@ -0,0 +1,21 @@ +/* + * Written by J.T. Conklin . + * Public domain. + */ + +#include + +RCSID("$NetBSD: e_acos.S,v 1.4 1995/05/08 23:44:37 jtc Exp $") + +/* acos = atan (sqrt(1 - x^2) / x) */ +ENTRY(__ieee754_acos) + fldl 4(%esp) /* x */ + fld %st /* x : x */ + fmul %st(0) /* x^2 : x */ + fld1 /* 1 : x^2 : x */ + fsubp /* 1 - x^2 : x */ + fsqrt /* sqrt (1 - x^2) : x */ + fxch %st(1) /* x : sqrt (1 - x^2) */ + fpatan /* atan (sqrt(1 - x^2) / x) */ + ret +END (__ieee754_acos) -- cgit 1.4.1