--- /dev/null
+/* mpfr_tlngamma -- test file for lngamma function
+
+Copyright 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+Contributed by the Arenaire and Cacao projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU MPFR Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or (at your
+option) any later version.
+
+The GNU MPFR Library 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 Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MPFR Library; see the file COPYING.LIB. If not, write to
+the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+MA 02110-1301, USA. */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "mpfr-test.h"
+
+#define TEST_FUNCTION mpfr_lngamma
+#define TEST_RANDOM_POS 16
+#include "tgeneric.c"
+
+static void
+special (void)
+{
+ mpfr_t x, y;
+ int inex;
+
+ mpfr_init (x);
+ mpfr_init (y);
+
+ mpfr_set_nan (x);
+ mpfr_lngamma (y, x, GMP_RNDN);
+ if (!mpfr_nan_p (y))
+ {
+ printf ("Error for lngamma(NaN)\n");
+ exit (1);
+ }
+
+ mpfr_set_inf (x, -1);
+ mpfr_lngamma (y, x, GMP_RNDN);
+ if (!mpfr_nan_p (y))
+ {
+ printf ("Error for lngamma(-Inf)\n");
+ exit (1);
+ }
+
+ mpfr_set_inf (x, 1);
+ mpfr_lngamma (y, x, GMP_RNDN);
+ if (!mpfr_inf_p (y) || mpfr_sgn (y) < 0)
+ {
+ printf ("Error for lngamma(+Inf)\n");
+ exit (1);
+ }
+
+ mpfr_set_ui (x, 0, GMP_RNDN);
+ mpfr_lngamma (y, x, GMP_RNDN);
+ if (!mpfr_inf_p (y) || mpfr_sgn (y) < 0)
+ {
+ printf ("Error for lngamma(+0)\n");
+ exit (1);
+ }
+
+ mpfr_set_ui (x, 0, GMP_RNDN);
+ mpfr_neg (x, x, GMP_RNDN);
+ mpfr_lngamma (y, x, GMP_RNDN);
+ if (!mpfr_nan_p (y))
+ {
+ printf ("Error for lngamma(-0)\n");
+ exit (1);
+ }
+
+ mpfr_set_ui (x, 1, GMP_RNDN);
+ mpfr_lngamma (y, x, GMP_RNDN);
+ if (MPFR_IS_NAN (y) || mpfr_cmp_ui (y, 0) || MPFR_IS_NEG (y))
+ {
+ printf ("Error for lngamma(1)\n");
+ exit (1);
+ }
+
+ mpfr_set_si (x, -1, GMP_RNDN);
+ mpfr_lngamma (y, x, GMP_RNDN);
+ if (!mpfr_nan_p (y))
+ {
+ printf ("Error for lngamma(-1)\n");
+ exit (1);
+ }
+
+ mpfr_set_ui (x, 2, GMP_RNDN);
+ mpfr_lngamma (y, x, GMP_RNDN);
+ if (MPFR_IS_NAN (y) || mpfr_cmp_ui (y, 0) || MPFR_IS_NEG (y))
+ {
+ printf ("Error for lngamma(2)\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 53);
+ mpfr_set_prec (y, 53);
+
+#define CHECK_X1 "1.0762904832837976166"
+#define CHECK_Y1 "-0.039418362817587634939"
+
+ mpfr_set_str (x, CHECK_X1, 10, GMP_RNDN);
+ mpfr_lngamma (y, x, GMP_RNDN);
+ mpfr_set_str (x, CHECK_Y1, 10, GMP_RNDN);
+ if (MPFR_IS_NAN (y) || mpfr_cmp (y, x))
+ {
+ printf ("mpfr_lngamma("CHECK_X1") is wrong:\n"
+ "expected ");
+ mpfr_print_binary (x); putchar ('\n');
+ printf ("got ");
+ mpfr_print_binary (y); putchar ('\n');
+ exit (1);
+ }
+
+#define CHECK_X2 "9.23709516716202383435e-01"
+#define CHECK_Y2 "0.049010669407893718563"
+ mpfr_set_str (x, CHECK_X2, 10, GMP_RNDN);
+ mpfr_lngamma (y, x, GMP_RNDN);
+ mpfr_set_str (x, CHECK_Y2, 10, GMP_RNDN);
+ if (MPFR_IS_NAN (y) || mpfr_cmp (y, x))
+ {
+ printf ("mpfr_lngamma("CHECK_X2") is wrong:\n"
+ "expected ");
+ mpfr_print_binary (x); putchar ('\n');
+ printf ("got ");
+ mpfr_print_binary (y); putchar ('\n');
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 8);
+ mpfr_set_prec (y, 175);
+ mpfr_set_ui (x, 33, GMP_RNDN);
+ mpfr_lngamma (y, x, GMP_RNDU);
+ mpfr_set_prec (x, 175);
+ mpfr_set_str_binary (x, "0.1010001100011101101011001101110010100001000001000001110011000001101100001111001001000101011011100100010101011110100111110101010100010011010010000101010111001100011000101111E7");
+ if (MPFR_IS_NAN (y) || mpfr_cmp (x, y))
+ {
+ printf ("Error in mpfr_lngamma (1)\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 21);
+ mpfr_set_prec (y, 8);
+ mpfr_set_ui (y, 120, GMP_RNDN);
+ mpfr_lngamma (x, y, GMP_RNDZ);
+ mpfr_set_prec (y, 21);
+ mpfr_set_str_binary (y, "0.111000101000001100101E9");
+ if (MPFR_IS_NAN (x) || mpfr_cmp (x, y))
+ {
+ printf ("Error in mpfr_lngamma (120)\n");
+ printf ("Expected "); mpfr_print_binary (y); puts ("");
+ printf ("Got "); mpfr_print_binary (x); puts ("");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 3);
+ mpfr_set_prec (y, 206);
+ mpfr_set_str_binary (x, "0.110e10");
+ inex = mpfr_lngamma (y, x, GMP_RNDN);
+ mpfr_set_prec (x, 206);
+ mpfr_set_str_binary (x, "0.10000111011000000011100010101001100110001110000111100011000100100110110010001011011110101001111011110110000001010100111011010000000011100110110101100111000111010011110010000100010111101010001101000110101001E13");
+ if (MPFR_IS_NAN (y) || mpfr_cmp (x, y))
+ {
+ printf ("Error in mpfr_lngamma (768)\n");
+ exit (1);
+ }
+ if (inex >= 0)
+ {
+ printf ("Wrong flag for mpfr_lngamma (768)\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 4);
+ mpfr_set_prec (y, 4);
+ mpfr_set_str_binary (x, "0.1100E-66");
+ mpfr_lngamma (y, x, GMP_RNDN);
+ mpfr_set_str_binary (x, "0.1100E6");
+ if (MPFR_IS_NAN (y) || mpfr_cmp (x, y))
+ {
+ printf ("Error for lngamma(0.1100E-66)\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 256);
+ mpfr_set_prec (y, 32);
+ mpfr_set_si_2exp (x, -1, 200, GMP_RNDN);
+ mpfr_add_ui (x, x, 1, GMP_RNDN);
+ mpfr_div_2ui (x, x, 1, GMP_RNDN);
+ mpfr_lngamma (y, x, GMP_RNDN);
+ mpfr_set_prec (x, 32);
+ mpfr_set_str_binary (x, "-0.10001000111011111011000010100010E207");
+ if (MPFR_IS_NAN (y) || mpfr_cmp (x, y))
+ {
+ printf ("Error for lngamma(-2^199+0.5)\n");
+ printf ("Got ");
+ mpfr_dump (y);
+ printf ("instead of ");
+ mpfr_dump (x);
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 256);
+ mpfr_set_prec (y, 32);
+ mpfr_set_si_2exp (x, -1, 200, GMP_RNDN);
+ mpfr_sub_ui (x, x, 1, GMP_RNDN);
+ mpfr_div_2ui (x, x, 1, GMP_RNDN);
+ mpfr_lngamma (y, x, GMP_RNDN);
+ if (!mpfr_nan_p (y))
+ {
+ printf ("Error for lngamma(-2^199-0.5)\n");
+ exit (1);
+ }
+
+ mpfr_clear (x);
+ mpfr_clear (y);
+}
+
+int
+main (void)
+{
+ tests_start_mpfr ();
+
+ special ();
+ test_generic (2, 100, 2);
+
+ tests_end_mpfr ();
+ return 0;
+}
projects / msp430-gcc.git / blobdiff