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-rw-r--r--libcrystfel/src/geometry.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/libcrystfel/src/geometry.h b/libcrystfel/src/geometry.h
index ccdea1c2..93aaf619 100644
--- a/libcrystfel/src/geometry.h
+++ b/libcrystfel/src/geometry.h
@@ -74,7 +74,8 @@ extern void update_partialities_2(Crystal *cryst, PartialityModel pmodel,
extern void polarisation_correction(RefList *list, UnitCell *cell,
struct image *image);
-#define LORENTZ_SCALE (0.01e9)
+extern double sphere_fraction(double rlow, double rhigh, double pr);
+extern double gaussian_fraction(double rlow, double rhigh, double pr);
#ifdef __cplusplus
}