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-rw-r--r--libcrystfel/src/cell.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/libcrystfel/src/cell.h b/libcrystfel/src/cell.h
index 625884e1..e5c98ace 100644
--- a/libcrystfel/src/cell.h
+++ b/libcrystfel/src/cell.h
@@ -140,6 +140,10 @@ extern UnitCell *cell_transform(UnitCell *cell, UnitCellTransformation *t);
extern UnitCell *cell_transform_inverse(UnitCell *cell,
UnitCellTransformation *t);
-extern void cell_transformation_print(UnitCellTransformation *t);
+extern UnitCellTransformation *tfn_identity(void);
+extern void tfn_combine(UnitCellTransformation *t,
+ double *na, double *nb, double *nc);
+extern void tfn_print(UnitCellTransformation *t);
+extern double *tfn_vector(double a, double b, double c);
#endif /* CELL_H */