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/* mpf_pow_ui -- Compute b^e.
Copyright 1998, 1999, 2001 Free Software Foundation, Inc.
This file is part of the GNU MP Library.
The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
The GNU MP 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
#include "gmp.h"
#include "gmp-impl.h"
void
mpf_pow_ui (mpf_ptr r, mpf_srcptr b, unsigned long int e)
{
mpf_t b2;
unsigned long int e2;
mpf_init2 (b2, mpf_get_prec (r));
mpf_set (b2, b);
mpf_set_ui (r, 1);
if ((e & 1) != 0)
mpf_set (r, b2);
for (e2 = e >> 1; e2 != 0; e2 >>= 1)
{
mpf_mul (b2, b2, b2);
if ((e2 & 1) != 0)
mpf_mul (r, r, b2);
}
mpf_clear (b2);
}
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