Fixed bug #21648

diff --git a/ext/standard/math.c b/ext/standard/math.c
index 62bf1a4b93723972a17f9a6a00dd417e7b9e8da5..137b228d9648773aa7e8fb96890c97ee8f89938d 100644 (file)
--- a/ext/standard/math.c
+++ b/ext/standard/math.c
@@ -1011,7 +1011,7 @@ PHPAPI char *_php_math_number_format(double d, int dec, char dec_point, char tho
 
        /* allow for thousand separators */
        if (thousand_sep) {
-               integral += integral / 3;
+               integral += (integral-1) / 3;
        }
        
        reslen = integral;