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-rw-r--r--libcrystfel/src/rational.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libcrystfel/src/rational.h b/libcrystfel/src/rational.h
index 8681bb06..012b929e 100644
--- a/libcrystfel/src/rational.h
+++ b/libcrystfel/src/rational.h
@@ -92,6 +92,8 @@ extern IntegerMatrix *intmat_from_rtnl_mtx(const RationalMatrix *m);
extern void rtnl_mtx_free(RationalMatrix *mtx);
extern void rtnl_mtx_mtxmult(const RationalMatrix *A, const RationalMatrix *B,
RationalMatrix *ans);
+extern void rtnl_mtx_intmatmult(const RationalMatrix *A, const IntegerMatrix *B,
+ RationalMatrix *ans);
extern int transform_fractional_coords_rtnl(const RationalMatrix *P,
const Rational *ivec,
Rational *ans);