Contributed by John C. Bowman <bowman@ipp-garching.mpg.de>, 1995.
The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. 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 Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
#include <math.h>
return __value;
#else
- return linkme_exp(__x);
+ register double __val;
+ __asm
+ {
+ fld1 // store 1.0 for later use
+ fld __x
+ fldl2e // e^x = 2^(x * log2(e))
+ fmul st,st(1) // x * log2(e)
+ fld st(0)
+ frndint // int(x * log2(e))
+ fsub st,st(1) // fract(x * log2(e))
+ fxch
+ f2xm1 // 2^(fract(x * log2(e))) - 1
+ fadd st,st(3) // + 1.0
+ fscale
+ fstp __val
+ }
+ return __val;
#endif /*__GNUC__*/
}