X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fexpl.c;h=407da5fb883a68bc04287320038895876502ec32;hb=f4c549fab688ce822556eadcf60fdda5042ade11;hp=86bff2486f8a25564afba82eacf4be6296c03376;hpb=932b68847804db93ae058c71d6236d2dc4c905b7;p=gnulib.git

diff --git a/lib/expl.c b/lib/expl.c
index 86bff2486..407da5fb8 100644
--- a/lib/expl.c
+++ b/lib/expl.c
@@ -1,28 +1,29 @@
 /* Emulation for expl.
    Contributed by Paolo Bonzini
 
-   Copyright 2002, 2003 Free Software Foundation, Inc.
+   Copyright 2002, 2003, 2007, 2009, 2010 Free Software Foundation, Inc.
 
    This file is part of gnulib.
 
-   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
-   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
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
-   You should have received a copy of the GNU General Public License along
-   with this program; if not, write to the Free Software Foundation,
-   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#include <float.h>
+#include <config.h>
+
+/* Specification.  */
 #include <math.h>
 
-#include "mathl.h"
+#include <float.h>
 
 static const long double C[] = {
 /* Chebyshev polynom coeficients for (exp(x)-1)/x */
@@ -71,16 +72,16 @@ expl (long double x)
       x -= exponent / 8.0L;
 
       if (x > 0.0625)
-	{
-	  exponent++;
-	  x -= 0.125L;
-	}
+        {
+          exponent++;
+          x -= 0.125L;
+        }
 
       if (exponent < 0)
         {
           t = 0.8824969025845954028648921432290507362220L; /* e^-0.25 */
-	  exponent = -exponent;
-	}
+          exponent = -exponent;
+        }
       else
         t = 1.1331484530668263168290072278117938725655L; /* e^0.25 */
 
@@ -96,8 +97,8 @@ expl (long double x)
         }
 
       /* Approximate (e^x - 1)/x, using a seventh-degree polynomial,
-	 with maximum error in [-2^-16-2^-53,2^-16+2^-53]
-	 less than 4.8e-39.  */
+         with maximum error in [-2^-16-2^-53,2^-16+2^-53]
+         less than 4.8e-39.  */
       x22 = x + x*x*(P1+x*(P2+x*(P3+x*(P4+x*(P5+x*P6)))));
 
       return result + result * x22;
@@ -106,11 +107,11 @@ expl (long double x)
   else if (x < himark)
     {
       if (x + x == x)
-	/* e^-inf == 0, with no error.  */
-	return 0;
+        /* e^-inf == 0, with no error.  */
+        return 0;
       else
-	/* Underflow */
-	return TINY * TINY;
+        /* Underflow */
+        return TINY * TINY;
     }
   else
     /* Return x, if x is a NaN or Inf; or overflow, otherwise.  */
@@ -121,14 +122,14 @@ expl (long double x)
 int
 main (void)
 {
-  printf ("%.16Lg\n", expl(1.0L));
-  printf ("%.16Lg\n", expl(-1.0L));
-  printf ("%.16Lg\n", expl(2.0L));
-  printf ("%.16Lg\n", expl(4.0L));
-  printf ("%.16Lg\n", expl(-2.0L));
-  printf ("%.16Lg\n", expl(-4.0L));
-  printf ("%.16Lg\n", expl(0.0625L));
-  printf ("%.16Lg\n", expl(0.3L));
-  printf ("%.16Lg\n", expl(0.6L));
+  printf ("%.16Lg\n", expl (1.0L));
+  printf ("%.16Lg\n", expl (-1.0L));
+  printf ("%.16Lg\n", expl (2.0L));
+  printf ("%.16Lg\n", expl (4.0L));
+  printf ("%.16Lg\n", expl (-2.0L));
+  printf ("%.16Lg\n", expl (-4.0L));
+  printf ("%.16Lg\n", expl (0.0625L));
+  printf ("%.16Lg\n", expl (0.3L));
+  printf ("%.16Lg\n", expl (0.6L));
 }
 #endif