/* Emulation for expl.
Contributed by Paolo Bonzini
- Copyright 2002, 2003, 2007 Free Software Foundation, Inc.
+ Copyright 2002-2003, 2007, 2009-2011 Free Software Foundation, Inc.
This file is part of gnulib.
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 */
}
/* 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;
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. */
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