/* * have_memmv - Determine if we memmove() * * usage: * have_memmv * * Not all systems with memcpy() have memmove() functions, so this may not * compile on your system. * * This prog outputs several defines: * * HAVE_MEMMOVE * defined ==> use memmove() * undefined ==> use internal slow memmove() instead */ /* * Copyright (c) 1997 by Landon Curt Noll. All Rights Reserved. * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby granted, * provided that the above copyright, this permission notice and text * this comment, and the disclaimer below appear in all of the following: * * supporting documentation * source copies * source works derived from this source * binaries derived from this source or from derived source * * LANDON CURT NOLL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO * EVENT SHALL LANDON CURT NOLL BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. * * chongo was here /\../\ */ #include #define MOVELEN 3 char src[] = "chongo was here"; char dest[MOVELEN+1]; int main(void) { #if defined(HAVE_NO_MEMMOVE) printf("#undef HAVE_MEMMOVE /* no */\n"); #else /* HAVE_NO_MEMMOVE */ (void) memmove(dest, src, MOVELEN); printf("#define HAVE_MEMMOVE /* yes */\n"); #endif /* HAVE_NO_MEMMOVE */ /* exit(0); */ return 0; }