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Diffstat (limited to 'mcon/U/d_ffs.U')
-rw-r--r-- | mcon/U/d_ffs.U | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/mcon/U/d_ffs.U b/mcon/U/d_ffs.U new file mode 100644 index 0000000..93c7667 --- /dev/null +++ b/mcon/U/d_ffs.U @@ -0,0 +1,43 @@ +?RCS: $Id$ +?RCS: +?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic License, +?RCS: as specified in the README file that comes with the distribution. +?RCS: You may reuse parts of this distribution only within the terms of +?RCS: that same Artistic License; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?RCS: $Log: d_ffs.U,v $ +?RCS: Revision 3.0 1993/08/18 12:06:03 ram +?RCS: Baseline for dist 3.0 netwide release. +?RCS: +?MAKE:d_ffs: Trylink cat +?MAKE: -pick add $@ %< +?S:d_ffs: +?S: This variable conditionally defines the HAS_FFS symbol, which +?S: indicates to the C program that the ffs() routine is available +?S: to find the first bit which is set in its integer argument. +?S:. +?C:HAS_FFS: +?C: This symbol, if defined, indicates that the ffs routine is available +?C: to find the first bit set in its argument. If it's not available, +?C: roll your own. +?C:. +?H:#$d_ffs HAS_FFS /**/ +?H:. +?LINT:set d_ffs +: see if ffs exists +$cat >try.c <<EOC +#include <strings.h> +int main(void) +{ + static int i, ret; + ret |= ffs(i); + return ret ? 0 : 1; +} +EOC +cyn=ffs +set d_ffs +eval $trylink + |