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

1.1     ! ohara       1: /* Test file for mpfr_add_ui
        !             2:
        !             3: Copyright 2000, 2001, 2002 Free Software Foundation.
        !             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 Lesser General Public License as published by
        !             9: the Free Software Foundation; either version 2.1 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 Lesser General Public
        !            15: License for more details.
        !            16:
        !            17: You should have received a copy of the GNU Lesser 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: /* #define DEBUG */
        !            23: /* #define VERBOSE */
        !            24:
        !            25: #include <math.h>
        !            26: #include <stdio.h>
        !            27: #include <stdlib.h>
        !            28: #include <time.h>
        !            29: #include "gmp.h"
        !            30: #include "mpfr.h"
        !            31: #include "mpfr-impl.h"
        !            32: #include "mpfr-test.h"
        !            33:
        !            34: void check3 _PROTO((double, unsigned long, unsigned int, double));
        !            35: void special _PROTO((void));
        !            36:
        !            37: #define check(x,y,r) check3(x,y,r,0.0)
        !            38:
        !            39: /* checks that x+y gives the same results in double
        !            40:    and with mpfr with 53 bits of precision */
        !            41: void
        !            42: check3 (double x, unsigned long y, unsigned int rnd_mode, double z1)
        !            43: {
        !            44:   double z2; mpfr_t xx,zz;
        !            45:
        !            46:   mpfr_init2(xx, 53);
        !            47:   mpfr_init2(zz, 53);
        !            48:   mpfr_set_d(xx, x, rnd_mode);
        !            49:   mpfr_add_ui(zz, xx, y, rnd_mode);
        !            50: #ifdef MPFR_HAVE_FESETROUND
        !            51:   mpfr_set_machine_rnd_mode(rnd_mode);
        !            52: #endif
        !            53:   if (z1==0.0) z1 = x+y;
        !            54:   z2 = mpfr_get_d1 (zz);
        !            55:   if (z1!=z2 && !(isnan(z1) && isnan(z2))) {
        !            56:     printf("expected sum is %1.20e, got %1.20e\n",z1,z2);
        !            57:     printf("mpfr_add_ui failed for x=%1.20e y=%lu with rnd_mode=%s\n",
        !            58:           x, y, mpfr_print_rnd_mode(rnd_mode));
        !            59:     exit(1);
        !            60:   }
        !            61:   mpfr_clear(xx); mpfr_clear(zz);
        !            62: }
        !            63:
        !            64: void
        !            65: special (void)
        !            66: {
        !            67:   mpfr_t x, y;
        !            68:
        !            69:   mpfr_init2 (x, 63);
        !            70:   mpfr_init2 (y, 63);
        !            71:   mpfr_set_str_raw (x, "0.110100000000000001110001110010111111000000000101100011100100011");
        !            72:   mpfr_add_ui (y, x, 1, GMP_RNDD);
        !            73:   mpfr_clear (x);
        !            74:   mpfr_clear (y);
        !            75: }
        !            76:
        !            77: int
        !            78: main (int argc, char *argv[])
        !            79: {
        !            80: #ifdef MPFR_HAVE_FESETROUND
        !            81:   double x; unsigned long y, N; int i,rnd_mode,rnd;
        !            82:
        !            83:   mpfr_test_init ();
        !            84:
        !            85:   SEED_RAND (time(NULL));
        !            86:   N = (argc<2) ? 1000000 : atoi(argv[1]);
        !            87:   rnd_mode = (argc<3) ? -1 : atoi(argv[2]);
        !            88:   for (i=0;i<1000000;i++) {
        !            89:     x = drand();
        !            90:     y = LONG_RAND();
        !            91:     if (ABS(x)>2.2e-307 && x+y<1.7e+308 && x+y>-1.7e308) {
        !            92:       /* avoid denormalized numbers and overflows */
        !            93:       rnd = (rnd_mode==-1) ? LONG_RAND()%4 : rnd_mode;
        !            94:       check(x, y, rnd);
        !            95:     }
        !            96:   }
        !            97: #endif
        !            98:   special ();
        !            99:   check3 (-1.716113812768534e-140, 1271212614, GMP_RNDZ,
        !           100:          1.27121261399999976e9);
        !           101:   check3 (1.22191250737771397120e+20, 948002822, GMP_RNDN,
        !           102:          122191250738719408128.0);
        !           103:   check3 (-6.72658901114033715233e-165, 2000878121, GMP_RNDZ,
        !           104:          2.0008781209999997615e9);
        !           105:   check3 (-2.0769715792901673e-5, 880524, GMP_RNDN, 8.8052399997923023e5);
        !           106: #ifdef HAVE_INFS
        !           107:   check3 (DBL_POS_INF, 2394875, GMP_RNDN, DBL_POS_INF);
        !           108:   check3 (DBL_NEG_INF, 2394875, GMP_RNDN, DBL_NEG_INF);
        !           109:   check3 (DBL_NAN, 2394875, GMP_RNDN, DBL_NAN);
        !           110: #endif
        !           111:
        !           112:   return 0;
        !           113: }
        !           114: