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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /sysdeps/ieee754/dbl-64/branred.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-zack/build-layout-experiment.tar glibc-zack/build-layout-experiment.tar.gz glibc-zack/build-layout-experiment.tar.bz2 glibc-zack/build-layout-experiment.zip |
Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).
Diffstat (limited to 'sysdeps/ieee754/dbl-64/branred.c')
-rw-r--r-- | sysdeps/ieee754/dbl-64/branred.c | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/sysdeps/ieee754/dbl-64/branred.c b/sysdeps/ieee754/dbl-64/branred.c deleted file mode 100644 index 30ae9c79e2..0000000000 --- a/sysdeps/ieee754/dbl-64/branred.c +++ /dev/null @@ -1,144 +0,0 @@ -/* - * IBM Accurate Mathematical Library - * Written by International Business Machines Corp. - * Copyright (C) 2001-2017 Free Software Foundation, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as published by - * the Free Software Foundation; either version 2.1 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - */ -/*******************************************************************/ -/* */ -/* MODULE_NAME: branred.c */ -/* */ -/* FUNCTIONS: branred */ -/* */ -/* FILES NEEDED: branred.h mydefs.h endian.h mpa.h */ -/* mha.c */ -/* */ -/* Routine branred() performs range reduction of a double number */ -/* x into Double length number a+aa,such that */ -/* x=n*pi/2+(a+aa), abs(a+aa)<pi/4, n=0,+-1,+-2,.... */ -/* Routine returns the integer (n mod 4) of the above description */ -/* of x. */ -/*******************************************************************/ - -#include "endian.h" -#include "mydefs.h" -#include "branred.h" -#include <math.h> -#include <math_private.h> - -#ifndef SECTION -# define SECTION -#endif - - -/*******************************************************************/ -/* Routine branred() performs range reduction of a double number */ -/* x into Double length number a+aa,such that */ -/* x=n*pi/2+(a+aa), abs(a+aa)<pi/4, n=0,+-1,+-2,.... */ -/* Routine return integer (n mod 4) */ -/*******************************************************************/ -int -SECTION -__branred(double x, double *a, double *aa) -{ - int i,k; - mynumber u,gor; - double r[6],s,t,sum,b,bb,sum1,sum2,b1,bb1,b2,bb2,x1,x2,t1,t2; - - x*=tm600.x; - t=x*split; /* split x to two numbers */ - x1=t-(t-x); - x2=x-x1; - sum=0; - u.x = x1; - k = (u.i[HIGH_HALF]>>20)&2047; - k = (k-450)/24; - if (k<0) - k=0; - gor.x = t576.x; - gor.i[HIGH_HALF] -= ((k*24)<<20); - for (i=0;i<6;i++) - { r[i] = x1*toverp[k+i]*gor.x; gor.x *= tm24.x; } - for (i=0;i<3;i++) { - s=(r[i]+big.x)-big.x; - sum+=s; - r[i]-=s; - } - t=0; - for (i=0;i<6;i++) - t+=r[5-i]; - bb=(((((r[0]-t)+r[1])+r[2])+r[3])+r[4])+r[5]; - s=(t+big.x)-big.x; - sum+=s; - t-=s; - b=t+bb; - bb=(t-b)+bb; - s=(sum+big1.x)-big1.x; - sum-=s; - b1=b; - bb1=bb; - sum1=sum; - sum=0; - - u.x = x2; - k = (u.i[HIGH_HALF]>>20)&2047; - k = (k-450)/24; - if (k<0) - k=0; - gor.x = t576.x; - gor.i[HIGH_HALF] -= ((k*24)<<20); - for (i=0;i<6;i++) - { r[i] = x2*toverp[k+i]*gor.x; gor.x *= tm24.x; } - for (i=0;i<3;i++) { - s=(r[i]+big.x)-big.x; - sum+=s; - r[i]-=s; - } - t=0; - for (i=0;i<6;i++) - t+=r[5-i]; - bb=(((((r[0]-t)+r[1])+r[2])+r[3])+r[4])+r[5]; - s=(t+big.x)-big.x; - sum+=s; - t-=s; - b=t+bb; - bb=(t-b)+bb; - s=(sum+big1.x)-big1.x; - sum-=s; - - b2=b; - bb2=bb; - sum2=sum; - - sum=sum1+sum2; - b=b1+b2; - bb = (fabs(b1)>fabs(b2))? (b1-b)+b2 : (b2-b)+b1; - if (b > 0.5) - {b-=1.0; sum+=1.0;} - else if (b < -0.5) - {b+=1.0; sum-=1.0;} - s=b+(bb+bb1+bb2); - t=((b-s)+bb)+(bb1+bb2); - b=s*split; - t1=b-(b-s); - t2=s-t1; - b=s*hp0.x; - bb=(((t1*mp1.x-b)+t1*mp2.x)+t2*mp1.x)+(t2*mp2.x+s*hp1.x+t*hp0.x); - s=b+bb; - t=(b-s)+bb; - *a=s; - *aa=t; - return ((int) sum)&3; /* return quater of unit circle */ -} |