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2002-01-07  Stephen L Moshier <moshier@mediaone.net>

	* sysdeps/ieee754/ldbl-96/s_erfl.c (erfcl): Fix K&R header.

	* sysdeps/ieee754/ldbl-96/e_lgammal_r.c (sin_pi): Fix typo in test
	for x < 0.25 and restore original range reduction method.
	(__ieee754_lgammal_r): Make sure signgam is set before returning.
This commit is contained in:
Andreas Jaeger 2002-01-07 13:28:49 +00:00
parent af0c938d7b
commit c195dcdd75
2 changed files with 27 additions and 7 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2002-01-07 Stephen L Moshier <moshier@mediaone.net>
* sysdeps/ieee754/ldbl-96/s_erfl.c (erfcl): Fix K&R header.
* sysdeps/ieee754/ldbl-96/e_lgammal_r.c (sin_pi): Fix typo in test
for x < 0.25 and restore original range reduction method.
(__ieee754_lgammal_r): Make sure signgam is set before returning.
2002-01-07 Ulrich Drepper <drepper@redhat.com>
* libio/fileops.c (_IO_file_underflow_mmap): New function.

26
sysdeps/ieee754/ldbl-96/e_lgammal_r.c
View File

@ -84,6 +84,7 @@ static long double
half = 0.5L,
one = 1.0L,
pi = 3.14159265358979323846264L,
two63 = 9.223372036854775808e18L,
/* lgam(1+x) = 0.5 x + x a(x)/b(x)
-0.268402099609375 <= x <= 0
@ -206,8 +207,7 @@ sin_pi (x)
GET_LDOUBLE_WORDS (se, i0, i1, x);
ix = se & 0x7fff;
i1 = (ix << 16) | (i0 >> 16);
ix = (ix << 16) | (i0 >> 16);
if (ix < 0x3ffd8000) /* 0.25 */
return __sinl (pi * x);
y = -x; /* x is assume negative */
@ -219,13 +219,25 @@ sin_pi (x)
z = __floorl (y);
if (z != y)
{ /* inexact anyway */
y *= half;
y = 2.0 * (y - __floorl (y)); /* y = |x| mod 2.0 */
n = (int) (y * 4.0);
y *= 0.5;
y = 2.0*(y - __floorl(y)); /* y = |x| mod 2.0 */
n = (int) (y*4.0);
}
else
{
return (zero + zero);
if (ix >= 0x403f8000) /* 2^64 */
{
y = zero; n = 0; /* y must be even */
}
else
{
if (ix < 0x403e8000) /* 2^63 */
z = y + two63; /* exact */
GET_LDOUBLE_WORDS (se, i0, i1, z);
n = i1 & 1;
y = n;
n <<= 2;
}
}
switch (n)
@ -267,6 +279,7 @@ __ieee754_lgammal_r (x, signgamp)
int i, ix;
u_int32_t se, i0, i1;
*signgamp = 1;
GET_LDOUBLE_WORDS (se, i0, i1, x);
ix = se & 0x7fff;
@ -276,7 +289,6 @@ __ieee754_lgammal_r (x, signgamp)
ix = (ix << 16) | (i0 >> 16);
/* purge off +-inf, NaN, +-0, and negative arguments */
*signgamp = 1;
if (ix >= 0x7fff0000)
return x * x;