perlapi: Document memzero

diff --git a/perl.h b/perl.h
index 70112bd..e8ecb1b 100644 (file)
--- a/perl.h
+++ b/perl.h
@@ -1376,6 +1376,12 @@ Use L</UV> to declare variables of the maximum usable size on this platform.
 #define MALLOC_TOO_LATE_FOR(ch)        TOO_LATE_FOR_(ch, " with $ENV{PERL_MALLOC_OPT}")
 #define MALLOC_CHECK_TAINT2(argc,argv) MALLOC_CHECK_TAINT(argc,argv,NULL)
 
+/*
+=for apidoc Am|void|memzero|void * d|Size_t l
+Set the C<l> bytes starting at C<*d> to all zeroes.
+
+=cut
+*/
 #ifndef memzero
 #   define memzero(d,l) memset(d,0,l)
 #endif