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Make __mpexp_twomm1 an array of doubles

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Cleanup to get rid of the `number` muck which is not necessary here.
This commit is contained in:
Siddhesh Poyarekar 2013-01-10 14:53:40 +05:30
parent 7e9b080575
commit 751b85f795
3 changed files with 33 additions and 87 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2013-01-10 Siddhesh Poyarekar <siddhesh@redhat.com>
* sysdeps/ieee754/dbl-64/mpexp.c (__mpexp): New array of
doubles __mpexp_twomm1. Adjust usage.
* sysdeps/ieee754/dbl-64/mpexp.h (__mpexp_twomm1):
Remove.
2013-01-10 Andreas Schwab <schwab@suse.de>
[BZ #14964]

29
sysdeps/ieee754/dbl-64/mpexp.c
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@ -47,8 +47,31 @@ __mpexp(mp_no *x, mp_no *y, int p) {
double a,b;
static const int np[33] = {0,0,0,0,3,3,4,4,5,4,4,5,5,5,6,6,6,6,6,6,
6,6,6,6,7,7,7,7,8,8,8,8,8};
static const int m1p[33]= {0,0,0,0,17,23,23,28,27,38,42,39,43,47,43,47,50,54,
57,60,64,67,71,74,68,71,74,77,70,73,76,78,81};
static const int m1p[33]=
{
0, 0, 0, 0,
17, 23, 23, 28,
27, 38, 42, 39,
43, 47, 43, 47,
50, 54, 57, 60,
64, 67, 71, 74,
68, 71, 74, 77,
70, 73, 76, 78,
81
};
/* Stored values for 2^-m, where values of m are defined in M1P above. */
static const double __mpexp_twomm1[33] =
{
0x1.0p0, 0x1.0p0, 0x1.0p0, 0x1.0p0,
0x1.0p-17, 0x1.0p-23, 0x1.0p-23, 0x1.0p-28,
0x1.0p-27, 0x1.0p-38, 0x1.0p-42, 0x1.0p-39,
0x1.0p-43, 0x1.0p-47, 0x1.0p-43, 0x1.0p-47,
0x1.0p-50, 0x1.0p-54, 0x1.0p-57, 0x1.0p-60,
0x1.0p-64, 0x1.0p-67, 0x1.0p-71, 0x1.0p-74,
0x1.0p-68, 0x1.0p-71, 0x1.0p-74, 0x1.0p-77,
0x1.0p-70, 0x1.0p-73, 0x1.0p-76, 0x1.0p-78,
0x1.0p-81
};
static const int m1np[7][18] = {
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{ 0, 0, 0, 0,36,48,60,72, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
@ -63,7 +86,7 @@ __mpexp(mp_no *x, mp_no *y, int p) {
mp_no mps,mpak,mpt1,mpt2;
/* Choose m,n and compute a=2**(-m) */
n = np[p]; m1 = m1p[p]; a = __mpexp_twomm1[p].d;
n = np[p]; m1 = m1p[p]; a = __mpexp_twomm1[p];
for (i=0; i<EX; i++) a *= RADIXI;
for ( ; i>EX; i--) a *= RADIX;
b = X[1]*RADIXI; m2 = 24*EX;

84
sysdeps/ieee754/dbl-64/mpexp.h
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@ -27,90 +27,6 @@
#ifndef MPEXP_H
#define MPEXP_H
extern const number __mpexp_twomm1[33] attribute_hidden;
#ifndef AVOID_MPEXP_H
#ifdef BIG_ENDI
const number
__mpexp_twomm1[33] = { /* 2**-m1 */
/**/ {{0x3ff00000, 0x00000000} }, /* 1 */
/**/ {{0x3ff00000, 0x00000000} }, /* 1 */
/**/ {{0x3ff00000, 0x00000000} }, /* 1 */
/**/ {{0x3ff00000, 0x00000000} }, /* 1 */
/**/ {{0x3ee00000, 0x00000000} }, /* 2**-17 */
/**/ {{0x3e800000, 0x00000000} }, /* 2**-23 */
/**/ {{0x3e800000, 0x00000000} }, /* 2**-23 */
/**/ {{0x3e300000, 0x00000000} }, /* 2**-28 */
/**/ {{0x3e400000, 0x00000000} }, /* 2**-27 */
/**/ {{0x3d900000, 0x00000000} }, /* 2**-38 */
/**/ {{0x3d500000, 0x00000000} }, /* 2**-42 */
/**/ {{0x3d800000, 0x00000000} }, /* 2**-39 */
/**/ {{0x3d400000, 0x00000000} }, /* 2**-43 */
/**/ {{0x3d000000, 0x00000000} }, /* 2**-47 */
/**/ {{0x3d400000, 0x00000000} }, /* 2**-43 */
/**/ {{0x3d000000, 0x00000000} }, /* 2**-47 */
/**/ {{0x3cd00000, 0x00000000} }, /* 2**-50 */
/**/ {{0x3c900000, 0x00000000} }, /* 2**-54 */
/**/ {{0x3c600000, 0x00000000} }, /* 2**-57 */
/**/ {{0x3c300000, 0x00000000} }, /* 2**-60 */
/**/ {{0x3bf00000, 0x00000000} }, /* 2**-64 */
/**/ {{0x3bc00000, 0x00000000} }, /* 2**-67 */
/**/ {{0x3b800000, 0x00000000} }, /* 2**-71 */
/**/ {{0x3b500000, 0x00000000} }, /* 2**-74 */
/**/ {{0x3bb00000, 0x00000000} }, /* 2**-68 */
/**/ {{0x3b800000, 0x00000000} }, /* 2**-71 */
/**/ {{0x3b500000, 0x00000000} }, /* 2**-74 */
/**/ {{0x3b200000, 0x00000000} }, /* 2**-77 */
/**/ {{0x3b900000, 0x00000000} }, /* 2**-70 */
/**/ {{0x3b600000, 0x00000000} }, /* 2**-73 */
/**/ {{0x3b300000, 0x00000000} }, /* 2**-76 */
/**/ {{0x3b100000, 0x00000000} }, /* 2**-78 */
/**/ {{0x3ae00000, 0x00000000} }, /* 2**-81 */
};
#else
#ifdef LITTLE_ENDI
const number
__mpexp_twomm1[33] = { /* 2**-m1 */
/**/ {{0x00000000, 0x3ff00000} }, /* 1 */
/**/ {{0x00000000, 0x3ff00000} }, /* 1 */
/**/ {{0x00000000, 0x3ff00000} }, /* 1 */
/**/ {{0x00000000, 0x3ff00000} }, /* 1 */
/**/ {{0x00000000, 0x3ee00000} }, /* 2**-17 */
/**/ {{0x00000000, 0x3e800000} }, /* 2**-23 */
/**/ {{0x00000000, 0x3e800000} }, /* 2**-23 */
/**/ {{0x00000000, 0x3e300000} }, /* 2**-28 */
/**/ {{0x00000000, 0x3e400000} }, /* 2**-27 */
/**/ {{0x00000000, 0x3d900000} }, /* 2**-38 */
/**/ {{0x00000000, 0x3d500000} }, /* 2**-42 */
/**/ {{0x00000000, 0x3d800000} }, /* 2**-39 */
/**/ {{0x00000000, 0x3d400000} }, /* 2**-43 */
/**/ {{0x00000000, 0x3d000000} }, /* 2**-47 */
/**/ {{0x00000000, 0x3d400000} }, /* 2**-43 */
/**/ {{0x00000000, 0x3d000000} }, /* 2**-47 */
/**/ {{0x00000000, 0x3cd00000} }, /* 2**-50 */
/**/ {{0x00000000, 0x3c900000} }, /* 2**-54 */
/**/ {{0x00000000, 0x3c600000} }, /* 2**-57 */
/**/ {{0x00000000, 0x3c300000} }, /* 2**-60 */
/**/ {{0x00000000, 0x3bf00000} }, /* 2**-64 */
/**/ {{0x00000000, 0x3bc00000} }, /* 2**-67 */
/**/ {{0x00000000, 0x3b800000} }, /* 2**-71 */
/**/ {{0x00000000, 0x3b500000} }, /* 2**-74 */
/**/ {{0x00000000, 0x3bb00000} }, /* 2**-68 */
/**/ {{0x00000000, 0x3b800000} }, /* 2**-71 */
/**/ {{0x00000000, 0x3b500000} }, /* 2**-74 */
/**/ {{0x00000000, 0x3b200000} }, /* 2**-77 */
/**/ {{0x00000000, 0x3b900000} }, /* 2**-70 */
/**/ {{0x00000000, 0x3b600000} }, /* 2**-73 */
/**/ {{0x00000000, 0x3b300000} }, /* 2**-76 */
/**/ {{0x00000000, 0x3b100000} }, /* 2**-78 */
/**/ {{0x00000000, 0x3ae00000} }, /* 2**-81 */
};
#endif
#endif
#endif
#define RADIX 0x1.0p24 /* 2^24 */
#define RADIXI 0x1.0p-24 /* 2^-24 */
#define ZERO 0.0 /* 0 */