pqc/external/flint-2.4.3/fmpq_poly/test/t-print_read.c

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2014-05-18 22:03:37 +00:00
/*=============================================================================
This file is part of FLINT.
FLINT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FLINT 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2010 Sebastian Pancratz
******************************************************************************/
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_poly.h"
#include "fmpq_poly.h"
#if !defined (__WIN32) || defined(__CYGWIN__)
/*
The function fdopen is declared in stdio.h. It is POSIX.1 compliant,
but not ANSI compliant. The following line enables compilation with
the "-ansi" flag.
*/
extern FILE * fdopen(int fildes, const char *mode);
int main(void)
{
int i, j, n = 1000, result;
FILE *in, *out;
int fd[2];
pid_t childpid;
FLINT_TEST_INIT(state);
flint_printf("print/ read....");
fflush(stdout);
/* Randomise n polynomials, write to and read from a pipe */
{
fmpq_poly_t *a;
a = flint_malloc(n * sizeof(fmpq_poly_t));
for (i = 0; i < n; i++)
{
fmpq_poly_init(a[i]);
fmpq_poly_randtest(a[i], state, 100, 100);
}
if (pipe(fd))
{
flint_printf("FAIL:\n");
flint_printf("Failed to set-up the pipe.\n");
abort();
}
if((childpid = fork()) == -1)
{
flint_printf("FAIL:\n");
flint_printf("Failed to fork the process.\n");
abort();
}
if(childpid == 0) /* Child process */
{
int r;
close(fd[0]);
out = fdopen(fd[1], "w");
if (out == NULL)
{
flint_printf("FAIL:\n");
flint_printf("Could not open output file at the pipe.\n");
abort();
}
for (j = 0; j < n; j++)
{
r = fmpq_poly_fprint(out, a[j]);
if ((j < n - 1) && (r > 0))
r = flint_fprintf(out, "\n");
if (r <= 0)
{
flint_printf("FAIL:\n");
flint_printf("Write error.\n");
abort();
}
}
fclose(out);
exit(0);
}
else /* Parent process */
{
int r;
fmpq_poly_t t;
close(fd[1]);
in = fdopen(fd[0], "r");
if (in == NULL)
{
flint_printf("FAIL:\n");
flint_printf("Could not open input file at the pipe.\n");
abort();
}
fmpq_poly_init(t);
i = 0;
while (!feof(in))
{
r = fmpq_poly_fread(in, t);
if (r <= 0)
{
flint_printf("FAIL:\n");
flint_printf("Read error.\n");
abort();
}
result = fmpq_poly_equal(t, a[i]);
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("a[i] = "), fmpq_poly_debug(a[i]), flint_printf("\n");
flint_printf("t = "), fmpq_poly_debug(t), flint_printf("\n");
abort();
}
++i;
}
fmpq_poly_clear(t);
fclose(in);
}
if (i != n)
{
flint_printf("FAIL:\n");
flint_printf("Only %d out of %d objects were processed.\n", i, n);
abort();
}
for (i = 0; i < n; i++)
fmpq_poly_clear(a[i]);
flint_free(a);
}
/* Write bad data to a pipe and read it */
{
char str[5] = {'b', 'l', 'a', 'h', '\0'};
if (pipe(fd))
{
flint_printf("FAIL:\n");
flint_printf("Failed to set-up the pipe.\n");
abort();
}
if((childpid = fork()) == -1)
{
flint_printf("FAIL:\n");
flint_printf("Failed to fork the process.\n");
abort();
}
if(childpid == 0) /* Child process */
{
int r;
close(fd[0]);
out = fdopen(fd[1], "w");
if (out == NULL)
{
flint_printf("FAIL:\n");
flint_printf("Could not open output file at the pipe.\n");
abort();
}
r = flint_fprintf(out, "blah");
if (r <= 0)
{
flint_printf("FAIL:\n");
flint_printf("Write error.\n");
abort();
}
fclose(out);
exit(0);
}
else /* Parent process */
{
int r;
fmpq_poly_t t;
close(fd[1]);
in = fdopen(fd[0], "r");
if (in == NULL)
{
flint_printf("FAIL:\n");
flint_printf("Could not open input file at the pipe.\n");
abort();
}
fmpq_poly_init(t);
i = 0;
while (!feof(in))
{
r = fmpq_poly_fread(in, t);
if (r > 0)
{
flint_printf("FAIL:\n");
flint_printf("r = %d\n", r);
abort();
}
++i;
}
fmpq_poly_clear(t);
fclose(in);
}
/* For {'b','l','a','h','\0'} we expect 5 reads */
if (i != 5)
{
flint_printf("FAIL:\n");
flint_printf("Carried out %d reads, but \"%s\" has only 4 characters.\n", i, str);
abort();
}
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return EXIT_SUCCESS;
}
#else
int main(void)
{
flint_printf("print/ read....");
fflush(stdout);
flint_printf("SKIPPED\n");
return EXIT_SUCCESS;
}
#endif