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| author | Wilco Dijkstra <wdijkstr@arm.com> | 2015-05-15 10:53:55 +0000 |
|---|---|---|
| committer | Wilco Dijkstra <wdijkstr@arm.com> | 2015-05-15 11:04:40 +0000 |
| commit | 0e9be4db8f655d3dc006c5b101f15a5912a5846f (patch) | |
| tree | b03088c533aab59ee41220bd469433d2a2abb527 /sysdeps/ieee754/dbl-64/dla.h | |
| parent | fbc68f03b0e56db6a07d789fd403eb79d726fe96 (diff) | |
| download | glibc-0e9be4db8f655d3dc006c5b101f15a5912a5846f.tar.gz glibc-0e9be4db8f655d3dc006c5b101f15a5912a5846f.tar.xz glibc-0e9be4db8f655d3dc006c5b101f15a5912a5846f.zip | |
Remove various ABS macros and replace uses with fabs (or in one case abs)
which is more efficient on all targets.
Diffstat (limited to 'sysdeps/ieee754/dbl-64/dla.h')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/dla.h | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/sysdeps/ieee754/dbl-64/dla.h b/sysdeps/ieee754/dbl-64/dla.h index a4d0b8b0ac..641644eeb1 100644 --- a/sysdeps/ieee754/dbl-64/dla.h +++ b/sysdeps/ieee754/dbl-64/dla.h @@ -17,6 +17,8 @@ * along with this program; if not, see <http://www.gnu.org/licenses/>. */ +#include <math.h> + /***********************************************************************/ /*MODULE_NAME: dla.h */ /* */ @@ -44,7 +46,7 @@ /* z+zz = x+y exactly. */ #define EADD(x,y,z,zz) \ - z=(x)+(y); zz=(ABS(x)>ABS(y)) ? (((x)-(z))+(y)) : (((y)-(z))+(x)); + z=(x)+(y); zz=(fabs(x)>fabs(y)) ? (((x)-(z))+(y)) : (((y)-(z))+(x)); /* Exact subtraction of two single-length floating point numbers, Dekker. */ @@ -52,7 +54,7 @@ /* z+zz = x-y exactly. */ #define ESUB(x,y,z,zz) \ - z=(x)-(y); zz=(ABS(x)>ABS(y)) ? (((x)-(z))-(y)) : ((x)-((y)+(z))); + z=(x)-(y); zz=(fabs(x)>fabs(y)) ? (((x)-(z))-(y)) : ((x)-((y)+(z))); /* Exact multiplication of two single-length floating point numbers, */ @@ -94,7 +96,7 @@ /* storage variables of type double. */ #define ADD2(x, xx, y, yy, z, zz, r, s) \ - r = (x) + (y); s = (ABS (x) > ABS (y)) ? \ + r = (x) + (y); s = (fabs (x) > fabs (y)) ? \ (((((x) - r) + (y)) + (yy)) + (xx)) : \ (((((y) - r) + (x)) + (xx)) + (yy)); \ z = r + s; zz = (r - z) + s; @@ -107,7 +109,7 @@ /* storage variables of type double. */ #define SUB2(x, xx, y, yy, z, zz, r, s) \ - r = (x) - (y); s = (ABS (x) > ABS (y)) ? \ + r = (x) - (y); s = (fabs (x) > fabs (y)) ? \ (((((x) - r) - (y)) - (yy)) + (xx)) : \ ((((x) - ((y) + r)) + (xx)) - (yy)); \ z = r + s; zz = (r - z) + s; @@ -144,16 +146,16 @@ #define ADD2A(x, xx, y, yy, z, zz, r, rr, s, ss, u, uu, w) \ r = (x) + (y); \ - if (ABS (x) > ABS (y)) { rr = ((x) - r) + (y); s = (rr + (yy)) + (xx); } \ + if (fabs (x) > fabs (y)) { rr = ((x) - r) + (y); s = (rr + (yy)) + (xx); } \ else { rr = ((y) - r) + (x); s = (rr + (xx)) + (yy); } \ if (rr != 0.0) { \ z = r + s; zz = (r - z) + s; } \ else { \ - ss = (ABS (xx) > ABS (yy)) ? (((xx) - s) + (yy)) : (((yy) - s) + (xx));\ + ss = (fabs (xx) > fabs (yy)) ? (((xx) - s) + (yy)) : (((yy) - s) + (xx));\ u = r + s; \ - uu = (ABS (r) > ABS (s)) ? ((r - u) + s) : ((s - u) + r); \ + uu = (fabs (r) > fabs (s)) ? ((r - u) + s) : ((s - u) + r); \ w = uu + ss; z = u + w; \ - zz = (ABS (u) > ABS (w)) ? ((u - z) + w) : ((w - z) + u); } + zz = (fabs (u) > fabs (w)) ? ((u - z) + w) : ((w - z) + u); } /* Double-length subtraction, slower but more accurate than SUB2. */ @@ -165,13 +167,13 @@ #define SUB2A(x, xx, y, yy, z, zz, r, rr, s, ss, u, uu, w) \ r = (x) - (y); \ - if (ABS (x) > ABS (y)) { rr = ((x) - r) - (y); s = (rr - (yy)) + (xx); } \ + if (fabs (x) > fabs (y)) { rr = ((x) - r) - (y); s = (rr - (yy)) + (xx); } \ else { rr = (x) - ((y) + r); s = (rr + (xx)) - (yy); } \ if (rr != 0.0) { \ z = r + s; zz = (r - z) + s; } \ else { \ - ss = (ABS (xx) > ABS (yy)) ? (((xx) - s) - (yy)) : ((xx) - ((yy) + s)); \ + ss = (fabs (xx) > fabs (yy)) ? (((xx) - s) - (yy)) : ((xx) - ((yy) + s)); \ u = r + s; \ - uu = (ABS (r) > ABS (s)) ? ((r - u) + s) : ((s - u) + r); \ + uu = (fabs (r) > fabs (s)) ? ((r - u) + s) : ((s - u) + r); \ w = uu + ss; z = u + w; \ - zz = (ABS (u) > ABS (w)) ? ((u - z) + w) : ((w - z) + u); } + zz = (fabs (u) > fabs (w)) ? ((u - z) + w) : ((w - z) + u); } |