Centralize definitions of MIN, MAX

Instead of having each file have them, keep them in handy.h, but only
for core compilations.

1 files changed, 9 insertions, 0 deletions

diff --git a/handy.h b/handy.h
index 5428d7c38d..11009d3b89 100644
--- a/handy.h
+++ b/handy.h
@@ -277,6 +277,15 @@ typedef U64TYPE U64;
 /* Unused by core; should be deprecated */
 #define Ctl(ch) ((ch) & 037)
 
+#if defined(PERL_CORE) || defined(PERL_EXT)
+#  ifndef MIN
+#    define MIN(a,b) ((a) < (b) ? (a) : (b))
+#  endif
+#  ifndef MAX
+#    define MAX(a,b) ((a) > (b) ? (a) : (b))
+#  endif
+#endif
+
 /* This is a helper macro to avoid preprocessor issues, replaced by nothing
  * unless under DEBUGGING, where it expands to an assert of its argument,
  * followed by a comma (hence the comma operator).  If we just used a straight