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-rw-r--r--libcrystfel/src/utils.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/libcrystfel/src/utils.h b/libcrystfel/src/utils.h
index 30a7c4ef..08e059a7 100644
--- a/libcrystfel/src/utils.h
+++ b/libcrystfel/src/utils.h
@@ -75,6 +75,7 @@ extern "C" {
extern void show_matrix_eqn(gsl_matrix *M, gsl_vector *v);
extern void show_matrix(gsl_matrix *M);
extern void show_vector(gsl_vector *M);
+extern gsl_vector *solve_inv(gsl_vector *v, gsl_matrix *M);
extern gsl_vector *solve_svd(gsl_vector *v, gsl_matrix *M, int *n_filt,
int verbose);
extern gsl_matrix *matrix_mult2(gsl_matrix *A, gsl_matrix *B);