path: root/mcon/U/d_built_bswap64.U
diff options
Diffstat (limited to 'mcon/U/d_built_bswap64.U')
1 files changed, 35 insertions, 0 deletions
diff --git a/mcon/U/d_built_bswap64.U b/mcon/U/d_built_bswap64.U
new file mode 100644
index 0000000..6379502
--- /dev/null
+++ b/mcon/U/d_built_bswap64.U
@@ -0,0 +1,35 @@
+?RCS: Copyright (c) 2013 Raphael Manfredi
+?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.
+?MAKE:d_built_bswap64: Trylink cat
+?MAKE: -pick add $@ %<
+?S: This variable conditionally defines the HAS_BUILTIN_BSWAP64 symbol, which
+?S: indicates to the C program that __builtin_bswap64 is available.
+?C: This symbol, if defined, indicates that __builtin_bswap64 routine is
+?C: available to byte-swap a 64-bit value (little <-> big endian).
+?H:#$d_built_bswap64 HAS_BUILTIN_BSWAP64 /**/
+?LINT:set d_built_bswap64
+: check for __builtin_bswap64
+$cat >try.c <<EOC
+int main(void)
+ static int ret;
+ ret |= __builtin_bswap64(127);
+ return ret ? 0 : 1;
+set d_built_bswap64
+eval $trylink