From: Andrey Zelenkov <zelenkov@nginx.com>
Date: Wed, 7 Jun 2017 13:36:13 +0000 (+0300)
Subject: Fixed zero basis handling for scientific notation.
X-Git-Tag: 0.1.11~25
X-Git-Url: http://www.kaiwu.me/postgresql/commit/?a=commitdiff_plain;h=48bf7240983a0155a0619af1561d8835843eaecd;p=njs.git

Fixed zero basis handling for scientific notation.
---

diff --git a/njs/njs_number.c b/njs/njs_number.c
index cd1179f3..039c9c58 100644
--- a/njs/njs_number.c
+++ b/njs/njs_number.c
@@ -154,8 +154,10 @@ njs_number_dec_parse(u_char **start, u_char *end)
                 p++;
             }
 
-            exponent = minus ? -exponent : exponent;
-            num = num * pow(10.0, exponent);
+            if (num != 0) {
+                exponent = minus ? -exponent : exponent;
+                num = num * pow(10.0, exponent);
+            }
         }
     }
 
diff --git a/njs/test/njs_unit_test.c b/njs/test/njs_unit_test.c
index ff2e963b..0639da4f 100644
--- a/njs/test/njs_unit_test.c
+++ b/njs/test/njs_unit_test.c
@@ -191,6 +191,12 @@ static njs_unit_test_t  njs_test[] =
     { nxt_string("1.0e308"),
       nxt_string("1e+308") },
 
+    { nxt_string("0e309"),
+      nxt_string("0") },
+
+    { nxt_string("0e-309"),
+      nxt_string("0") },
+
     { nxt_string("1e"),
       nxt_string("SyntaxError: Unexpected token \"e\" in 1") },