1 files changed, 39 insertions, 0 deletions
diff --git a/util.c b/util.c
new file mode 100644
index 0000000..11b1bcf
--- /dev/null
+++ b/util.c
@@ -0,0 +1,39 @@
+/*
+ * util.c
+ *
+ * Utility stuff
+ *
+ * (c) 2009 Thomas White <taw27@cam.ac.uk>
+ *
+ * Triclinator - solve nasty triclinic unit cells
+ *
+ */
+
+#include <stdio.h>
+
+#include "util.h"
+
+double read_value(const char *text)
+{
+	while ( 1 ) {
+
+		float d;
+		char buf[64];
+
+		printf("%s", text);
+		if ( fgets(buf, 63, stdin) != buf ) {
+			fprintf(stderr, "Error reading from input\n");
+		}
+		if ( sscanf(buf, "%f", &d) != 1 ) {
+			printf("Invalid input, try again.\n");
+		} else {
+			return d;
+		}
+	}
+}
+
+int is_dspacing(MVal val)
+{
+	if ( (val.h2 == 0) && (val.k2 == 0) && (val.l2 == 0) ) return 1;
+	return 0;
+}