Factor out convert_int

2 files changed, 17 insertions, 0 deletions

diff --git a/libcrystfel/src/utils.c b/libcrystfel/src/utils.c
index 8391fe95..ef0eb014 100644
--- a/libcrystfel/src/utils.c
+++ b/libcrystfel/src/utils.c
@@ -307,6 +307,21 @@ void ERROR(const char *format, ...)
 
 /* ------------------------------ Useful functions ---------------------------- */
 
+int convert_int(const char *str, int *pval)
+{
+	int val;
+	char *rval;
+
+	val = strtod(str, &rval);
+	if ( *rval != '\0' ) {
+		return 1;
+	} else {
+		*pval = val;
+		return 0;
+	}
+}
+
+
 size_t notrail(char *s)
 {
 	ssize_t i;
diff --git a/libcrystfel/src/utils.h b/libcrystfel/src/utils.h
index 51158e8b..95b455a2 100644
--- a/libcrystfel/src/utils.h
+++ b/libcrystfel/src/utils.h
@@ -76,7 +76,9 @@ extern void show_matrix_eqn(gsl_matrix *M, gsl_vector *v);
 extern void show_matrix(gsl_matrix *M);
 extern gsl_vector *solve_svd(gsl_vector *v, gsl_matrix *M, int *n_filt,
                             int verbose);
+
 extern size_t notrail(char *s);
+extern int convert_int(const char *str, int *pval);
 extern void chomp(char *s);
 
 #define CLEAR_BIT(val, bit) (((val) | (bit)) ^ (bit))