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ref: 2c505c160e4ada69f8663a5c42979d3633314087
parent: e77002cdab4f069cd4ba2e489f2f9bc090b09ab7
author: ftrvxmtrx <ftrvxmtrx@gmail.com>
date: Tue Jun 9 19:34:36 EDT 2015

addpt(2): document badrect function

--- a/sys/man/2/addpt
+++ b/sys/man/2/addpt
@@ -54,6 +54,9 @@
 void		combinerect(Rectangle *rp, Rectangle b)
 .PP
 .B
+int		badrect(Rectangle r)
+.PP
+.B
 int		Dx(Rectangle r)
 .PP
 .B
@@ -175,6 +178,12 @@
 .B *rp
 and
 .BR b .
+.PP
+.I Badrect
+returns 1 if
+.I r
+is zero, negative size or insanely huge rectangle.
+It returns 0 otherwise.
 .PP
 The functions
 .I Dx