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Update. 

2001-07-23  Stephen L Moshier <moshier@mediaone.net>

	* sysdeps/ieee754/ldbl-128/s_expm1l.c (__expm1l): Return proper
	sign for 0 input.  Return NaN with no exception for NaN input.
This commit is contained in:
Andreas Jaeger 2001-07-23 08:54:31 +00:00
parent 1a9cbbbf75
commit 514abd20fe
2 changed files with 19 additions and 10 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2001-07-23 Stephen L Moshier <moshier@mediaone.net>
* sysdeps/ieee754/ldbl-128/s_expm1l.c (__expm1l): Return proper
sign for 0 input. Return NaN with no exception for NaN input.
2001-07-23 Ulrich Drepper <drepper@redhat.com> 2001-07-23 Ulrich Drepper <drepper@redhat.com>
* iconv/gconv_builtin.h: ISO-106464/UTF-8/ transformation must * iconv/gconv_builtin.h: ISO-106464/UTF-8/ transformation must

24
sysdeps/ieee754/ldbl-128/s_expm1l.c
View File

@ -81,14 +81,6 @@ __expm1l (long double x)
ieee854_long_double_shape_type u; ieee854_long_double_shape_type u;
int k; int k;
/* Overflow. */
if (x > maxlog)
return (big * big);
/* Minimum value. */
if (x < minarg)
return (4.0 / big - 1.0L);
/* Detect infinity and NaN. */ /* Detect infinity and NaN. */
u.value = x; u.value = x;
ix = u.parts32.w0; ix = u.parts32.w0;
@ -104,10 +96,22 @@ __expm1l (long double x)
else else
return x; return x;
} }
/* NaN. */ /* NaN. No invalid exception. */
return (x + x); return x;
} }
/* expm1(+- 0) = +- 0. */
if ((ix == 0) && (u.parts32.w1 | u.parts32.w2 | u.parts32.w3) == 0)
return x;
/* Overflow. */
if (x > maxlog)
return (big * big);
/* Minimum value. */
if (x < minarg)
return (4.0/big - 1.0L);
/* Express x = ln 2 (k + remainder), remainder not exceeding 1/2. */ /* Express x = ln 2 (k + remainder), remainder not exceeding 1/2. */
xx = C1 + C2; /* ln 2. */ xx = C1 + C2; /* ln 2. */
px = __floorl (0.5 + x / xx); px = __floorl (0.5 + x / xx);