manpage and ini update

[xonotic/gmqcc.git] / doc / gmqcc.1

diff --git a/doc/gmqcc.1 b/doc/gmqcc.1
index 56728d17588c4f432180f7bd1769faa784d160ec..60257dc444b9645fe100f213d000f2ca3412437e 100644 (file)
--- a/doc/gmqcc.1
+++ b/doc/gmqcc.1
@@ -497,6 +497,15 @@ void vafunc(string...count) {
 Most Quake VMs, including the one from FTEQW or up till recently
 Darkplaces, do not cope well with vector instructions with overlapping
 input and output. This option will avoid producing such code.
+.It Fl f Ns Cm expressions-for-builtins
+Usually builtin-numbers are just immediate constants. With this flag
+expressions can be used, as long as they are compile-time constant.
+.Pp
+Example:
+.Bd -literal -offset indent
+void printA() = #1; // the usual way
+void printB() = #2-1; // with a constant expression
+.Ed
 .El
 .Sh OPTIMIZATIONS
 .Bl -tag -width Ds