274 lines
7.2 KiB
C
274 lines
7.2 KiB
C
/*=============================================================================
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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 <string.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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#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_pretty....");
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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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fmpz_poly_t *a;
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char *var = "x";
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a = flint_malloc(n * sizeof(fmpz_poly_t));
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for (i = 0; i < n; i++)
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{
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fmpz_poly_init(a[i]);
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fmpz_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 = fmpz_poly_fprint_pretty(out, a[j], var);
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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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fmpz_poly_t t;
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char *rvar;
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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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fmpz_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 = fmpz_poly_fread_pretty(in, t, &rvar);
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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 = fmpz_poly_equal(t, a[i]) &&
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(t->length <= 1 || (strcmp(var, rvar) == 0));
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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] = "), fmpz_poly_print_pretty(a[i], var), flint_printf("\n");
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flint_printf("t = "), fmpz_poly_print_pretty(t, rvar), flint_printf("\n");
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flint_printf("rvar = %s\n", rvar);
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abort();
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}
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flint_free(rvar);
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++i;
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}
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fmpz_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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fmpz_poly_clear(a[i]);
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flint_free(a);
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}
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/* Write "blah" to the pipe and see it read as a variable */
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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 = fputs(str, out);
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if (r == EOF)
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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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char *rvar = NULL;
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int r;
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fmpz_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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fmpz_poly_init(t);
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while (!feof(in))
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{
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r = fmpz_poly_fread_pretty(in, t, &rvar);
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result = (r > 0) && rvar && (strcmp(str, rvar) == 0) &&
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(t->length == 2) && (t->coeffs[0] == WORD(0)) &&
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(t->coeffs[1] == WORD(1));
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if (!result)
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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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flint_printf("str = {%s}\n", str);
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flint_printf("rvar = {%s}\n", rvar);
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flint_printf("t = "), fmpz_poly_print(t), flint_printf("\n");
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abort();
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}
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if (rvar)
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flint_free(rvar);
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}
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fmpz_poly_clear(t);
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fclose(in);
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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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