[MINOR] provide easy-to-use limit_r and LIM2A* macros
This is in fact the same as ultoa() except that it's possible to
pass the string to be returned in case the value is NULL. This is
useful to report limits in printf calls.
diff --git a/src/standard.c b/src/standard.c
index fff7168..1e631301 100644
--- a/src/standard.c
+++ b/src/standard.c
@@ -63,6 +63,19 @@
return pos + 1;
}
+/*
+ * This function simply returns a locally allocated string containing the ascii
+ * representation for number 'n' in decimal, unless n is 0 in which case it
+ * returns the alternate string (or an empty string if the alternate string is
+ * NULL). It use is intended for limits reported in reports, where it's
+ * desirable not to display anything if there is no limit. Warning! it shares
+ * the same vector as ultoa_r().
+ */
+const char *limit_r(unsigned long n, char *buffer, int size, const char *alt)
+{
+ return (n) ? ultoa_r(n, buffer, size) : (alt ? alt : "");
+}
+
/*
* Returns non-zero if character <s> is a hex digit (0-9, a-f, A-F), else zero.