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/********************* */
/*! \file ffs.c
** \verbatim
** Top contributors (to current version):
** Morgan Deters, Andres Noetzli
** This file is part of the CVC4 project.
** Copyright (c) 2009-2019 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.\endverbatim
**
** \brief Replacement for ffs() for systems without it (like Win32)
**
** 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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