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authorUlrich Drepper <drepper@gmail.com>2011-10-24 20:19:17 -0400
committerUlrich Drepper <drepper@gmail.com>2011-10-24 20:19:17 -0400
commitaf968f62f24c5c0ef4e7e5ab41acae946908c112 (patch)
treee1e0570eeb00c434cc751cbadfbeae150eeea11a /sysdeps/ieee754/dbl-64/dosincos.c
parent58985aa92f57ff46e96b32388ce65e7fdd8c8b9e (diff)
downloadglibc-af968f62f24c5c0ef4e7e5ab41acae946908c112.tar.gz
Optimize accurate 64-bit routines for FMA4 on x86-64
Diffstat (limited to 'sysdeps/ieee754/dbl-64/dosincos.c')
-rw-r--r--sysdeps/ieee754/dbl-64/dosincos.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/sysdeps/ieee754/dbl-64/dosincos.c b/sysdeps/ieee754/dbl-64/dosincos.c
index d5c6a14053..712d585b9e 100644
--- a/sysdeps/ieee754/dbl-64/dosincos.c
+++ b/sysdeps/ieee754/dbl-64/dosincos.c
@@ -35,11 +35,16 @@
#include "endian.h"
#include "mydefs.h"
-#include "sincos.tbl"
#include <dla.h>
#include "dosincos.h"
#include "math_private.h"
+extern const union
+{
+ int4 i[880];
+ double x[440];
+} __sincostab attribute_hidden;
+
/***********************************************************************/
/* Routine receive Double-Length number (x+dx) and computing sin(x+dx) */
/* as Double-Length number and store it at array v .It computes it by */
@@ -66,10 +71,10 @@ void __dubsin(double x, double dx, double v[]) {
dd=(x-d)+dx;
/* sin(x+dx)=sin(Xi+t)=sin(Xi)*cos(t) + cos(Xi)sin(t) where t ->0 */
MUL2(d,dd,d,dd,d2,dd2,p,hx,tx,hy,ty,q,c,cc);
- sn=sincos.x[k]; /* */
- ssn=sincos.x[k+1]; /* sin(Xi) and cos(Xi) */
- cs=sincos.x[k+2]; /* */
- ccs=sincos.x[k+3]; /* */
+ sn=__sincostab.x[k]; /* */
+ ssn=__sincostab.x[k+1]; /* sin(Xi) and cos(Xi) */
+ cs=__sincostab.x[k+2]; /* */
+ ccs=__sincostab.x[k+3]; /* */
MUL2(d2,dd2,s7.x,ss7.x,ds,dss,p,hx,tx,hy,ty,q,c,cc); /* Taylor */
ADD2(ds,dss,s5.x,ss5.x,ds,dss,r,s);
MUL2(d2,dd2,ds,dss,ds,dss,p,hx,tx,hy,ty,q,c,cc); /* series */
@@ -118,10 +123,10 @@ void __dubcos(double x, double dx, double v[]) {
d=x+dx;
dd=(x-d)+dx; /* cos(x+dx)=cos(Xi+t)=cos(Xi)cos(t) - sin(Xi)sin(t) */
MUL2(d,dd,d,dd,d2,dd2,p,hx,tx,hy,ty,q,c,cc);
- sn=sincos.x[k]; /* */
- ssn=sincos.x[k+1]; /* sin(Xi) and cos(Xi) */
- cs=sincos.x[k+2]; /* */
- ccs=sincos.x[k+3]; /* */
+ sn=__sincostab.x[k]; /* */
+ ssn=__sincostab.x[k+1]; /* sin(Xi) and cos(Xi) */
+ cs=__sincostab.x[k+2]; /* */
+ ccs=__sincostab.x[k+3]; /* */
MUL2(d2,dd2,s7.x,ss7.x,ds,dss,p,hx,tx,hy,ty,q,c,cc);
ADD2(ds,dss,s5.x,ss5.x,ds,dss,r,s);
MUL2(d2,dd2,ds,dss,ds,dss,p,hx,tx,hy,ty,q,c,cc);