From 6d2fd44bc4fe9e3426a192cc3b14dfe3b316a72e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=96=9C=E6=AC=A2?= <csharpwz@outlook.com>
Date: Sun, 6 Apr 2025 20:18:37 +0800
Subject: [PATCH] strconv/atoi.go: use switch to handle leading '+' and '-' in
 Atoi

Replace if-else with a switch statement to handle leading '+' and '-'
characters.
---
 src/strconv/atoi.go | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/strconv/atoi.go b/src/strconv/atoi.go
index 599ad9b895..83e931fe24 100644
--- a/src/strconv/atoi.go
+++ b/src/strconv/atoi.go
@@ -204,11 +204,12 @@ func ParseInt(s string, base int, bitSize int) (i int64, err error) {
 	// Pick off leading sign.
 	s0 := s
 	neg := false
-	if s[0] == '+' {
+	switch s[0] {
+	case '+':
+		s = s[1:]
+	case '-':
 		s = s[1:]
-	} else if s[0] == '-' {
 		neg = true
-		s = s[1:]
 	}
 
 	// Convert unsigned and check range.