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Diffstat (limited to 'mcon/U/d_built_clz.U')
| -rw-r--r-- | mcon/U/d_built_clz.U | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/mcon/U/d_built_clz.U b/mcon/U/d_built_clz.U new file mode 100644 index 0000000..747f2a3 --- /dev/null +++ b/mcon/U/d_built_clz.U @@ -0,0 +1,37 @@ +?RCS: $Id: d_built_clz.U 167 2013-05-08 17:58:00Z rmanfredi $ +?RCS: +?RCS: Copyright (c) 2012 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: +?MAKE:d_built_clz: Trylink cat +?MAKE: -pick add $@ %< +?S:d_built_clz: +?S: This variable conditionally defines the HAS_BUILTIN_CLZ symbol, which +?S: indicates to the C program that __builtin_clz is available to count +?S: leading zeroes. +?S:. +?C:HAS_BUILTIN_CLZ: +?C: This symbol, if defined, indicates that the __builtin_clz routine is +?C: available to count leading zeroes in a word. +?C:. +?H:#$d_built_clz HAS_BUILTIN_CLZ /**/ +?H:. +?LINT:set d_built_clz +: check for __builtin_clz +$cat >try.c <<EOC +int main(void) +{ + static int ret; + ret |= __builtin_clz(127); + return ret ? 0 : 1; +} +EOC +cyn=__builtin_clz +set d_built_clz +eval $trylink + |