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Diffstat (limited to 'mcon/U/d_memrchr.U')
-rw-r--r-- | mcon/U/d_memrchr.U | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/mcon/U/d_memrchr.U b/mcon/U/d_memrchr.U new file mode 100644 index 0000000..c7b1c01 --- /dev/null +++ b/mcon/U/d_memrchr.U @@ -0,0 +1,40 @@ +?RCS: +?RCS: Copyright (c) 2018 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_memrchr: Trylink cat +?MAKE: -pick add $@ %< +?S:d_memrchr: +?S: This variable conditionally defines the HAS_MEMRCHR symbol, which +?S: indicates to the C program that the memrchr() routine is available +?S: to scan a block of memory backwards for a character. +?S:. +?C:HAS_MEMRCHR: +?C: This symbol, if defined, indicates that the memrchr routine is available +?C: to scan a block of memory backwards for a character. +?C: If undefined, roll your own. +?C:. +?H:#$d_memrchr HAS_MEMRCHR /**/ +?H:. +?LINT:set d_memrchr +: see if memrchr exists +$cat >try.c <<EOC +#include <string.h> +int main(void) +{ + static char s[] = "xxx"; + static size_t n = sizeof(s); + void *p; + p = memrchr(s, 'x', n); + return p ? 0 : 1; +} +EOC +cyn=memrchr +set d_memrchr +eval $trylink + |