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authorRoland McGrath <roland@gnu.org>2006-01-31 18:56:42 +0000
committerRoland McGrath <roland@gnu.org>2006-01-31 18:56:42 +0000
commit16f0ecedb5726fa46fac6a73b633aabcf469962d (patch)
treeb58989963f24a39fb71398dbf90c8d6f67f9f421 /sysdeps/ieee754/ldbl-128ibm/k_sinl.c
parent27d7e3b54c07b8eff35d2ff07ff9eb8ea03c853e (diff)
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* sysdeps/ieee754/ldbl-128ibm/k_cosl.c (__kernel_cosl): Correct index
for __sincosl_table. * sysdeps/ieee754/ldbl-128ibm/k_sincosl.c (__kernel_sincosl): Likewise. * sysdeps/ieee754/ldbl-128ibm/k_sinl.c (__kernel_sinl): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_ceill.c: Correct sign of 0.0. * sysdeps/ieee754/ldbl-128ibm/s_floorl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_cprojl.c: New file. * sysdeps/ieee754/ldbl-128ibm/s_ctanhl.c: New file. * sysdeps/ieee754/ldbl-128ibm/s_ctanl.c: New file.
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/k_sinl.c')
-rw-r--r--sysdeps/ieee754/ldbl-128ibm/k_sinl.c20
1 files changed, 19 insertions, 1 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/k_sinl.c b/sysdeps/ieee754/ldbl-128ibm/k_sinl.c
index c4dce26..24cb551 100644
--- a/sysdeps/ieee754/ldbl-128ibm/k_sinl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/k_sinl.c
@@ -104,6 +104,24 @@ __kernel_sinl(long double x, long double y, int iy)
pre-computed tables, compute cosl(l) and sinl(l) using a
Chebyshev polynomial of degree 10(11) and compute
sinl(h+l) = sinl(h)cosl(l) + cosl(h)sinl(l). */
+ int six = tix;
+ tix = ((six - 0x3ff00000) >> 4) + 0x3fff0000;
+ index = 0x3ffe - (tix >> 16);
+ hix = (tix + (0x200 << index)) & (0xfffffc00 << index);
+ x = fabsl (x);
+ switch (index)
+ {
+ case 0: index = ((45 << 10) + hix - 0x3ffe0000) >> 8; break;
+ case 1: index = ((13 << 11) + hix - 0x3ffd0000) >> 9; break;
+ default:
+ case 2: index = (hix - 0x3ffc3000) >> 10; break;
+ }
+ hix = (hix << 4) & 0x3fffffff;
+/*
+ The following should work for double but generates the wrong index.
+ For now the code above converts double to ieee extended to compute
+ the index back to double for the h value.
+
index = 0x3fe - (tix >> 20);
hix = (tix + (0x2000 << index)) & (0xffffc000 << index);
x = fabsl (x);
@@ -114,7 +132,7 @@ __kernel_sinl(long double x, long double y, int iy)
default:
case 2: index = (hix - 0x3fc30000) >> 14; break;
}
-
+*/
SET_LDOUBLE_WORDS64(h, ((u_int64_t)hix) << 32, 0);
if (iy)
l = y - (h - x);