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Tests for module 'get-rusage-data'.
[gnulib.git]
/
lib
/
atanl.c
diff --git
a/lib/atanl.c
b/lib/atanl.c
index
16c8dc1
..
22a882d
100644
(file)
--- a/
lib/atanl.c
+++ b/
lib/atanl.c
@@
-1,9
+1,9
@@
/* Copyright 2001 by Stephen L. Moshier <moshier@na-net.ornl.gov>
/* Copyright 2001 by Stephen L. Moshier <moshier@na-net.ornl.gov>
- This program is free software
;
you can redistribute it and/or modify
+ This program is free software
:
you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version
2, or (at your option)
- any later version.
+ the Free Software Foundation; either version
3 of the License, or
+
(at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
@@
-11,18
+11,16
@@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING.
- If not, write to the Free Software Foundation,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <math.h>
#include <config.h>
/* Specification. */
#include <math.h>
-/* s_atanl.c
+/*
s_atanl.c
*
*
- * Inverse circular tangent for 128-bit long double precision
+ *
Inverse circular tangent for 128-bit long double precision
* (arctangent)
*
*
* (arctangent)
*
*
@@
-64,7
+62,6
@@
*
*/
*
*/
-
/* arctan(k/8), k = 0, ..., 82 */
static const long double atantbl[84] = {
0.0000000000000000000000000000000000000000E0L,
/* arctan(k/8), k = 0, ..., 82 */
static const long double atantbl[84] = {
0.0000000000000000000000000000000000000000E0L,
@@
-178,19
+175,19
@@
atanl (long double x)
int k, sign;
long double t, u, p, q;
int k, sign;
long double t, u, p, q;
- sign = x < 0.0;
-
/* Check for zero or NaN. */
/* Check for zero or NaN. */
- if (
x != x
|| x == 0.0)
+ if (
isnanl (x)
|| x == 0.0)
return x + x;
return x + x;
+ sign = x < 0.0;
+
if (x + x == x)
{
/* Infinity. */
if (sign)
if (x + x == x)
{
/* Infinity. */
if (sign)
- return -atantbl[83];
+
return -atantbl[83];
else
else
- return atantbl[83];
+
return atantbl[83];
}
if (sign)
}
if (sign)
@@
-204,7
+201,7
@@
atanl (long double x)
else
{
/* Index of nearest table element.
else
{
/* Index of nearest table element.
- Roundoff to integer is asymmetrical to avoid cancellation when t < 0
+
Roundoff to integer is asymmetrical to avoid cancellation when t < 0
(cf. fdlibm). */
k = 8.0 * x + 0.25;
u = 0.125 * k;
(cf. fdlibm). */
k = 8.0 * x + 0.25;
u = 0.125 * k;