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Annotation of OpenXM_contrib/gmp/mpfr/tests/tzeta.c, Revision 1.1

1.1     ! maekawa     1: /* Test file for mpfr_zeta.
        !             2:
        !             3: Copyright (C) 1999 PolKA project, Inria Lorraine and Loria
        !             4:
        !             5: This file is part of the MPFR Library.
        !             6:
        !             7: The MPFR Library is free software; you can redistribute it and/or modify
        !             8: it under the terms of the GNU Library General Public License as published by
        !             9: the Free Software Foundation; either version 2 of the License, or (at your
        !            10: option) any later version.
        !            11:
        !            12: The MPFR Library is distributed in the hope that it will be useful, but
        !            13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            14: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
        !            15: License for more details.
        !            16:
        !            17: You should have received a copy of the GNU Library General Public License
        !            18: along with the MPFR Library; see the file COPYING.LIB.  If not, write to
        !            19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            20: MA 02111-1307, USA. */
        !            21:
        !            22: #include <stdio.h>
        !            23: #include <math.h>
        !            24: #include "gmp.h"
        !            25: #include "gmp-impl.h"
        !            26: #include "longlong.h"
        !            27: #include "mpfr.h"
        !            28:
        !            29: /* #define DEBUG */
        !            30:
        !            31: int main()
        !            32: {mpfr_t p,result,res_p; int succes; size_t t;
        !            33: mpfr_init2(result, 53);
        !            34: mpfr_init2(res_p, 53);
        !            35: mpfr_init2(p, 53); mpfr_set_d(p, 2.0, GMP_RNDN);
        !            36:
        !            37: mpfr_zeta(result,p,GMP_RNDN);
        !            38: /*printf("%d\n",succes);*/
        !            39: #ifdef DEBUG
        !            40: printf("Valeur de zeta(2) avec prec=53 et arrondi au plus pres:\n");
        !            41: mpfr_print_raw(result);printf("\n");
        !            42: t=mpfr_out_str(stdout,10,0,result,GMP_RNDN);printf("\n");
        !            43: #endif
        !            44:  if (mpfr_get_d(result) != 1.64493406684822640607e+00) {
        !            45:    fprintf(stderr, "mpfr_zeta fails for s=2 and rnd_mode=GMP_RNDN\n");
        !            46:    exit(1);
        !            47:  }
        !            48:
        !            49: /*Test de comparaison avec pi^2/6*/
        !            50: mpfr_set_prec(p, 67);
        !            51: mpfr_pi(p,GMP_RNDN);
        !            52: mpfr_mul(p,p,p,GMP_RNDN);
        !            53: mpfr_set_ui(res_p,6,GMP_RNDN);
        !            54: mpfr_div(p,p,res_p,GMP_RNDN);
        !            55: /*mpfr_print_raw(p);printf("\n");
        !            56: t=mpfr_out_str(stdout,10,0,p,GMP_RNDN);printf("\n");*/
        !            57: succes=mpfr_can_round(p,63,GMP_RNDN,GMP_RNDN,53);
        !            58: mpfr_set(res_p,p,GMP_RNDN);
        !            59: /*printf("%d\n",succes);*/
        !            60: #ifdef DEBUG
        !            61: printf("Valeur de pi^2/6 avec prec=53 et arrondi au plus pres:\n");
        !            62: mpfr_print_raw(res_p);printf("\n");
        !            63: t=mpfr_out_str(stdout,10,0,res_p,GMP_RNDN);printf("\n");
        !            64: #endif
        !            65:
        !            66: mpfr_clear(p);
        !            67: mpfr_clear(result);
        !            68: mpfr_clear(res_p);
        !            69: exit (0);
        !            70: }