X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/mLib/blobdiff_plain/0335afec2c33fefcd6d3cb2c39d014ab2519b2c2..13ee740655965453b2f3fcd7093d2d8b13839903:/test/tvec.h

diff --git a/test/tvec.h b/test/tvec.h
index b2ae674..d16df58 100644
--- a/test/tvec.h
+++ b/test/tvec.h
@@ -1994,6 +1994,23 @@ extern const struct tvec_floatinfo tvflt_finite, tvflt_nonneg;
 
 extern const struct tvec_regty tvty_duration;
 
+/* --- @tvec_parsedurunit@ --- *
+ *
+ * Arguments:	@double *scale_out@ = where to leave the scale
+ *		@const char **p_inout@ = input unit string, updated
+ *
+ * Returns:	Zero on success, %$-1$% on error.
+ *
+ * Use:		If @*p_inout@ begins with a unit string followed by the end
+ *		of the string or some non-alphanumeric character, then store
+ *		the corresponding scale factor in @*scale_out@, advance
+ *		@*p_inout@ past the unit string, and return zero.  Otherwise,
+ *		return %$-1$%.
+ */
+
+extern int tvec_parsedurunit(double */*scale_out*/,
+			     const char **/*p_inout*/);
+
 /*----- Enumerated types --------------------------------------------------*/
 
 /* An enumeration describes a set of values of some underlying type, each of