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/* tset.c -- Test file for mpfi_set functions.
Copyright 2009, 2010,
Spaces project, Inria Lorraine
and Salsa project, INRIA Rocquencourt,
and Arenaire project, Inria Rhone-Alpes, France
and Lab. ANO, USTL (Univ. of Lille), France
This file is part of the MPFI Library.
The MPFI 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 MPFI 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 MPFI Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "mpfi-tests.h"
void
check_endpoints (mpfi_t i, const char *left, const char *right,
const char *function_name)
{
mpfr_t l,r;
mpfr_inits2 (mpfi_get_prec (i), l, r, (mpfr_ptr)0);
mpfr_set_str (l, left, 0, MPFI_RNDD);
mpfr_set_str (r, right, 0, MPFI_RNDU);
if (!mpfr_equal_p (&(i->left), l) || !mpfr_equal_p (&(i->right), r)) {
printf ("Error in %s\nexpected [%s, %s]\n got ",
function_name, left, right);
mpfi_out_str (stdout, 16, 0, i);
putchar ('\n');
exit (1);
}
mpfr_clears (l, r, (mpfr_ptr)0);
}
void
check_fi (mpfi_ptr out, mpfi_ptr in, int expected_inex,
const char *left, const char *right)
{
int inex;
inex = mpfi_set (out, in);
if (inex != expected_inex) {
printf ("Error: mpfi_set returns unexpected value with input=");
mpfi_out_str (stdout, 10, 0, in);
printf (" and output precision=%lu\nexpected return value: %u, got: %u\n",
mpfi_get_prec (out), expected_inex, inex);
exit (1);
}
check_endpoints (out, left, right, "mpfi_set");
}
int
main (int argc, char **argv)
{
mpfi_t fi1;
mpfi_t fi2;
mpfi_init2 (fi1, 1024);
mpfi_init2 (fi2, 1024);
mpfi_set_prec (fi1, 2);
mpfi_set_prec (fi2, 53);
mpfr_set_str (&(fi1->left), "0.1", 0, MPFI_RNDD);
mpfr_set_str (&(fi1->right), "0.1", 0, MPFI_RNDU);
check_fi (fi2, fi1, MPFI_FLAGS_BOTH_ENDPOINTS_EXACT,
"0b11p-5", "0b10p-4");
mpfr_set_nan (&(fi1->left));
mpfr_set_nan (&(fi1->right));
mpfi_set (fi2, fi1);
if (!mpfr_nan_p (&(fi2->left)) || !mpfr_nan_p (&(fi2->right))) {
printf ("Error: mpfi_set does not handle NAN correctly\ngot: ");
mpfi_out_str (stdout, 10, 0, fi2);
putchar ('\n');
exit (1);
}
mpfi_set_prec (fi1, 53);
mpfi_set_prec (fi2, 2);
mpfr_set_str (&(fi1->left), "0.1", 0, MPFI_RNDD);
mpfr_set_str (&(fi1->right), "0.1", 0, MPFI_RNDU);
check_fi (fi2, fi1, MPFI_FLAGS_BOTH_ENDPOINTS_INEXACT,
"0x18@-2", "0x2@-1");
mpfr_set_str (&(fi1->left), "0.1", 0, MPFI_RNDD);
mpfr_set_str (&(fi1->right), "0.5", 0, MPFI_RNDU);
check_fi (fi2, fi1, MPFI_FLAGS_LEFT_ENDPOINT_INEXACT,
"0x18@-2", "0x8@-1");
mpfr_set_str (&(fi1->left), "-0.5", 0, MPFI_RNDD);
mpfr_set_str (&(fi1->right), "-0.1", 0, MPFI_RNDU);
check_fi (fi2, fi1, MPFI_FLAGS_RIGHT_ENDPOINT_INEXACT,
"-0x8@-1", "-0x18@-2");
mpfr_set_inf (&(fi1->left), -1);
mpfr_set_inf (&(fi1->right), -1);
check_fi (fi2, fi1, MPFI_FLAGS_BOTH_ENDPOINTS_EXACT,
"-@inf@", "-@inf@");
/* signed zeros */
mpfr_set_ui (&(fi1->left), 0, MPFI_RNDU);
mpfr_neg (&(fi1->right), &(fi1->left), MPFI_RNDD);
check_fi (fi2, fi1, MPFI_FLAGS_BOTH_ENDPOINTS_EXACT,
"+0", "-0");
if (mpfr_signbit (&(fi2->left)) || !mpfr_signbit (&(fi2->right))) {
printf ("Error: mpfi_set does not handle signed zeros correctly\ngot: ");
mpfi_out_str (stdout, 10, 0, fi2);
putchar ('\n');
exit (1);
}
mpfi_clear (fi1);
mpfi_clear (fi2);
return 0;
}
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