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/* Test file for mpfr_mul_2exp.
Copyright 1999, 2001, 2002, 2003, 2004 Free Software Foundation.
This file is part of the MPFR Library.
The MPFR 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 2.1 of the License, or (at your
option) any later version.
The MPFR 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 MPFR 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. */
#include <stdio.h>
#include <stdlib.h>
#include "mpfr-test.h"
static const char * const val[] = {
"1.0001@100","4.0004000000000@102", "4.0004000000000@97",
"1.ABF012345@-100","6.afc048d140000@-98","6.afc048d140000@-103",
"F.FFFFFFFFF@10000","3.fffffffffc000@10003","3.fffffffffc000@9998",
"1.23456789ABCDEF@42","4.8d159e26af37c@44","4.8d159e26af37c@39",
"17@42","5.c000000000000@45","5.c000000000000@40",
"42@-17","1.0800000000000@-13","1.0800000000000@-18"
};
int
main (int argc, char *argv[])
{
mpfr_t w,z;
unsigned long k;
tests_start_mpfr ();
mpfr_inits2(53, w, z, NULL);
mpfr_set_inf (w, 1);
mpfr_mul_2exp (w, w, 10, GMP_RNDZ);
if (!MPFR_IS_INF(w))
{
printf ("Inf != Inf");
exit (1);
}
mpfr_set_nan (w);
mpfr_mul_2exp (w, w, 10, GMP_RNDZ);
if (!MPFR_IS_NAN(w))
{
printf ("NaN != NaN");
exit (1);
}
for( k = 0 ; k < numberof(val) ; k+=3 )
{
mpfr_set_str (w, val[k], 16, GMP_RNDN);
mpfr_mul_2exp (z, w, 10, GMP_RNDZ);
if (mpfr_cmp_str(z, val[k+1], 16, GMP_RNDN))
{
printf("ERROR for mpfr_mul_2ui for %s\n", val[k]);
printf("Expected: %s\n"
"Got : ", val[k+1]);
mpfr_out_str(stdout, 16, 0, z, GMP_RNDN);
putchar('\n');
exit(-1);
}
mpfr_div_2exp (z, w, 10, GMP_RNDZ);
if (mpfr_cmp_str(z, val[k+2], 16, GMP_RNDN))
{
printf("ERROR for mpfr_div_2ui for %s\n"
"Expected: %s\n"
"Got : ", val[k], val[k+2]);
mpfr_out_str(stdout, 16, 0, z, GMP_RNDN);
putchar('\n');
exit(-1);
}
}
mpfr_set_ui(w, 1, GMP_RNDN);
mpfr_mul_2ui(w, w, (unsigned long) MPFR_EXP_MAX+12, GMP_RNDN);
if (!mpfr_inf_p(w))
{
printf("Overflow error!\n");
exit(1);
}
mpfr_set_ui(w, 1, GMP_RNDN);
mpfr_div_2ui(w, w, (unsigned long) MPFR_EXP_MAX+12, GMP_RNDN);
if (mpfr_cmp_ui(w, 0))
{
printf("Underflow error!\n");
exit(1);
}
mpfr_clears(w,z,NULL);
tests_end_mpfr ();
return 0;
}
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