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| author | Andreas Jaeger <aj@suse.de> | 2001-05-06 17:03:45 +0000 |
|---|---|---|
| committer | Andreas Jaeger <aj@suse.de> | 2001-05-06 17:03:45 +0000 |
| commit | b3b380428d844a1b856800305ea5d2d53b34378c (patch) | |
| tree | aad2d5074a99e57feb50505cd604dbccb486d4bb /sysdeps/i386/fpu/e_acosl.c | |
| parent | bcd249f6382acf5ada63e834242e9fb13bea7e4b (diff) | |
| download | glibc-b3b380428d844a1b856800305ea5d2d53b34378c.tar.gz glibc-b3b380428d844a1b856800305ea5d2d53b34378c.tar.xz glibc-b3b380428d844a1b856800305ea5d2d53b34378c.zip | |
Update.
2001-05-06 Andreas Jaeger <aj@suse.de> * sysdeps/i386/fpu/e_acosl.c: New, rewrite of e_acos.S. * sysdeps/i386/fpu/s_atanl.c: New, rewrite of e_atanl.S. * sysdeps/i386/fpu/e_sqrtl.c: New, rewrite of e_sqrt.S. * sysdeps/i386/fpu/e_acosl.S: Removed. * sysdeps/i386/fpu/s_atanl.S: Removed. * sysdeps/i386/fpu/e_sqrtl.S: Removed.
Diffstat (limited to 'sysdeps/i386/fpu/e_acosl.c')
| -rw-r--r-- | sysdeps/i386/fpu/e_acosl.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/sysdeps/i386/fpu/e_acosl.c b/sysdeps/i386/fpu/e_acosl.c new file mode 100644 index 0000000000..0c3e03945a --- /dev/null +++ b/sysdeps/i386/fpu/e_acosl.c @@ -0,0 +1,25 @@ +/* + * Written by J.T. Conklin <jtc@netbsd.org>. + * Public domain. + * + * Adapted for `long double' by Ulrich Drepper <drepper@cygnus.com>. + */ + +#include <math_private.h> + +long double +__ieee754_acosl (long double x) +{ + long double res; + + /* acosl = atanl (sqrtl(1 - x^2) / x) */ + asm ( "fld %%st\n" + "fmul %%st(0)\n" /* x^2 */ + "fld1\n" + "fsubp\n" /* 1 - x^2 */ + "fsqrt\n" /* sqrtl (1 - x^2) */ + "fxch %%st(1)\n" + "fpatan" + : "=t" (res) : "0" (x) : "st(1)"); + return res; +} |