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/* Test file for mpfr_trunc, mpfr_ceil, mpfr_floor.
Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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 "gmp.h"
#include "mpfr.h"
#include "mpfr-impl.h"
#define SIZEX 100
int
main (void)
{
int j, k; mpfr_t x, y, z, t, y2, z2, t2;
mpfr_init2(x, SIZEX);
mpfr_init2(y, SIZEX);
mpfr_init2(z, SIZEX);
mpfr_init2(t, SIZEX);
mpfr_init2(y2, SIZEX);
mpfr_init2(z2, SIZEX);
mpfr_init2(t2, SIZEX);
mpfr_set_d(x, 0.5, GMP_RNDN);
mpfr_ceil(y, x);
if (mpfr_get_d1 (y) != 1.0) {
fprintf(stderr, "Error in mpfr_ceil for x=0.5: expected 1.0, got %f\n",
mpfr_get_d1 (y)); exit(1);
}
mpfr_set_d(x, 0.0, GMP_RNDN);
mpfr_ceil(y, x);
if (mpfr_get_d1 (y) != 0.0) {
fprintf(stderr, "Error in mpfr_ceil for x=0.0: expected 0.0, got %f\n",
mpfr_get_d1 (y)); exit(1);
}
mpfr_set_d(x, 1.0, GMP_RNDN);
mpfr_ceil(y, x);
if (mpfr_get_d1 (y) != 1.0) {
fprintf(stderr, "Error in mpfr_ceil for x=1.0: expected 1.0, got %f\n",
mpfr_get_d1 (y)); exit(1);
}
for (j=0;j<1000;j++) {
mpfr_random(x);
MPFR_EXP(x) = 2;
for (k = 2; k <= SIZEX; k++)
{
mpfr_set_prec(y, k);
mpfr_set_prec(y2, k);
mpfr_set_prec(z, k);
mpfr_set_prec(z2, k);
mpfr_set_prec(t, k);
mpfr_set_prec(t2, k);
mpfr_floor(y, x);
mpfr_set(y2, x, GMP_RNDD);
mpfr_trunc(z, x);
mpfr_set(z2, x, GMP_RNDZ);
mpfr_ceil(t, x);
mpfr_set(t2, x, GMP_RNDU);
if (!mpfr_eq(y, y2, k))
{
printf("Error in floor, x = "); mpfr_print_binary(x); printf("\n");
printf("floor(x) = "); mpfr_print_binary(y); printf("\n");
printf("round(x, RNDD) = "); mpfr_print_binary(y2); printf("\n");
mpfr_clear(x);
mpfr_clear(y);
mpfr_clear(y2);
mpfr_clear(z);
mpfr_clear(z2);
mpfr_clear(t);
mpfr_clear(t2);
exit(-1);
}
if (!mpfr_eq(z, z2, k))
{
printf("Error in trunc, x = "); mpfr_print_binary(x); printf("\n");
printf("trunc(x) = "); mpfr_print_binary(z); printf("\n");
printf("round(x, RNDZ) = "); mpfr_print_binary(z2); printf("\n");
mpfr_clear(x);
mpfr_clear(y);
mpfr_clear(y2);
mpfr_clear(z);
mpfr_clear(z2);
mpfr_clear(t);
mpfr_clear(t2);
exit(-1);
}
if (!mpfr_eq(y, y2, k))
{
printf("Error in ceil, x = "); mpfr_print_binary(x); printf("\n");
printf("ceil(x) = "); mpfr_print_binary(t); printf("\n");
printf("round(x, RNDU) = "); mpfr_print_binary(t2); printf("\n");
mpfr_clear(x);
mpfr_clear(y);
mpfr_clear(y2);
mpfr_clear(z);
mpfr_clear(z2);
mpfr_clear(t);
mpfr_clear(t2);
exit(-1);
}
MPFR_EXP(x)++;
}
}
mpfr_clear(x);
mpfr_clear(y);
mpfr_clear(y2);
mpfr_clear(z);
mpfr_clear(z2);
mpfr_clear(t);
mpfr_clear(t2);
return 0;
}
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