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Merge with mainline.

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This commit is contained in:
Andreas Jaeger 2002-08-21 08:00:55 +00:00
parent a4e8b66c28
commit 4d5dbeceac
1 changed files with 26 additions and 16 deletions
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24
sysdeps/ieee754/ldbl-96/e_lgammal_r.c
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@ -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 *= 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;
@ -292,8 +304,6 @@ __ieee754_lgammal_r (x, signgamp)
}
if (se & 0x8000)
{
if (x == __floorl(x))
return x / zero;
t = sin_pi (x);
if (t == zero)
return one / fabsl (t); /* -integer */