Fix an incorrect negation

[libs/gl.git] / source / predicate.h

diff --git a/source/predicate.h b/source/predicate.h
index f7bb40d01152038e4013669c471407487fb40d64..13c22e84dc0b4300ad98bd268179aebaa8937e1d 100644 (file)
--- a/source/predicate.h
+++ b/source/predicate.h
@@ -1,6 +1,7 @@
 #ifndef MSP_GL_PREDICATE_H_
 #define MSP_GL_PREDICATE_H_
 
+#include <msp/strings/lexicalcast.h>
 #include "gl.h"
 
 namespace Msp {
@@ -18,6 +19,9 @@ enum Predicate
        NOTEQUAL = GL_NOTEQUAL
 };
 
+void operator>>(const LexicalConverter &, Predicate &);
+void operator<<(LexicalConverter &, Predicate);
+
 } // namespace GL
 } // namespace Msp