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