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/******************************************************************************
* Top contributors (to current version):
* Morgan Deters, Andres Noetzli
*
* This file is part of the cvc5 project.
*
* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
* in the top-level source directory and their institutional affiliations.
* All rights reserved. See the file COPYING in the top-level source
* directory for licensing information.
* ****************************************************************************
*
* Replacement for ffs() for systems without it (like Win32).
*/
#include "cvc4_private.h"
#include "lib/ffs.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#ifndef HAVE_FFS
int ffs(int i) {
long mask = 0x1;
int pos = 1;
while(pos <= sizeof(int) * 8) {
if((mask & i) != 0) {
return pos;
}
++pos;
mask <<= 1;
}
return 0;
}
#endif /* ifndef HAVE_FFS */
#ifdef __cplusplus
}/* extern "C" */
#endif /* __cplusplus */
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