1 files changed, 22 insertions, 0 deletions
diff --git a/src/backend/utils/adt/numutils.c b/src/backend/utils/adt/numutils.c
index 6b105964bd1..da100f7c0f2 100644
--- a/src/backend/utils/adt/numutils.c
+++ b/src/backend/utils/adt/numutils.c
@@ -388,3 +388,25 @@ pg_ltostr(char *str, int32 value)
 
 	return end;
 }
+
+/*
+ * pg_strtouint64
+ *		Converts 'str' into an unsigned 64-bit integer.
+ *
+ * This has the identical API to strtoul(3), except that it will handle
+ * 64-bit ints even where "long" is narrower than that.
+ *
+ * For the moment it seems sufficient to assume that the platform has
+ * such a function somewhere; let's not roll our own.
+ */
+uint64
+pg_strtouint64(const char *str, char **endptr, int base)
+{
+#ifdef WIN32
+	return _strtoui64(str, endptr, base);
+#elif defined(HAVE_STRTOULL) && SIZEOF_LONG < 8
+	return strtoull(str, endptr, base);
+#else
+	return strtoul(str, endptr, base);
+#endif
+}