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-rw-r--r--indra/llmath/m4math.cpp17
1 files changed, 17 insertions, 0 deletions
diff --git a/indra/llmath/m4math.cpp b/indra/llmath/m4math.cpp
index 7c7f60154d..3700142982 100644
--- a/indra/llmath/m4math.cpp
+++ b/indra/llmath/m4math.cpp
@@ -785,6 +785,23 @@ bool operator!=(const LLMatrix4 &a, const LLMatrix4 &b)
return FALSE;
}
+bool operator<(const LLMatrix4& a, const LLMatrix4 &b)
+{
+ U32 i, j;
+ for (i = 0; i < NUM_VALUES_IN_MAT4; i++)
+ {
+ for (j = 0; j < NUM_VALUES_IN_MAT4; j++)
+ {
+ if (a.mMatrix[i][j] != b.mMatrix[i][j])
+ {
+ return a.mMatrix[i][j] < b.mMatrix[i][j];
+ }
+ }
+ }
+
+ return false;
+}
+
const LLMatrix4& operator*=(LLMatrix4 &a, F32 k)
{
U32 i, j;