/* Copyright (C) 1994, 1997, 2000, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil), On-Line Applications Research Corporation. The GNU C 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 C 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 C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <stdlib.h> #include <stdio.h> #include <string.h> int main (void) { int failures = 0; int i; auto void try (const char *name, long long int param, int value, int expected); void try (const char *name, long long int param, int value, int expected) { if (value != expected) { printf ("%s(%#llx) expected %d got %d\n", name, param, expected, value); ++failures; } else printf ("%s(%#llx) as expected %d\n", name, param, value); } #define TEST(fct, type) \ try (#fct, 0, fct ((type) 0), 0); \ for (i=0 ; i < 8 * sizeof (type); i++) \ try (#fct, 1ll << i, fct (((type) 1) << i), i + 1); \ for (i=0 ; i < 8 * sizeof (type) ; i++) \ try (#fct, (~((type) 0) >> i) << i, fct ((~((type) 0) >> i) << i), i + 1);\ try (#fct, 0x80008000, fct ((type) 0x80008000), 16) TEST (ffs, int); TEST (ffsl, long int); TEST (ffsll, long long int); if (failures) printf ("Test FAILED! %d failure%s.\n", failures, &"s"[failures == 1]); else puts ("Test succeeded."); return failures; }