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-rw-r--r--libcrystfel/src/integer_matrix.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libcrystfel/src/integer_matrix.h b/libcrystfel/src/integer_matrix.h
index dcbe63bc..5a365f0a 100644
--- a/libcrystfel/src/integer_matrix.h
+++ b/libcrystfel/src/integer_matrix.h
@@ -64,6 +64,8 @@ extern void intmat_set(IntegerMatrix *m, unsigned int i, unsigned int j,
extern signed int intmat_get(const IntegerMatrix *m,
unsigned int i, unsigned int j);
+extern void intmat_zero(IntegerMatrix *m);
+
extern IntegerMatrix *intmat_create_3x3(signed int m11, signed int m12, signed int m13,
signed int m21, signed int m22, signed int m23,
signed int m31, signed int m32, signed int m33);