From 5a447c0ae9f43b608314d0fd2f3141fa9c5146ff Mon Sep 17 00:00:00 2001
From: Hanjun Kim <hallazzang@gmail.com>
Date: Sun, 12 Apr 2020 13:41:46 +0000
Subject: [PATCH] math/big: fix typo in documentation for Int.Exp

Fixes #38304

Also change `If m > 0, y < 0, ...` to `If m != 0, y < 0, ...` since `Exp` will return `nil`
whatever `m`'s sign is.

Change-Id: I17d7337ccd1404318cea5d42a8de904ad185fd00
GitHub-Last-Rev: 23995103000505dbf35aa29a717470c4da638fda
GitHub-Pull-Request: golang/go#38390
Reviewed-on: https://go-review.googlesource.com/c/go/+/228000
Reviewed-by: Robert Griesemer <gri@golang.org>
---
 src/math/big/int.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/math/big/int.go b/src/math/big/int.go
index 18f122e953..8816cf5266 100644
--- a/src/math/big/int.go
+++ b/src/math/big/int.go
@@ -465,8 +465,8 @@ func (x *Int) TrailingZeroBits() uint {
 }
 
 // Exp sets z = x**y mod |m| (i.e. the sign of m is ignored), and returns z.
-// If m == nil or m == 0, z = x**y unless y <= 0 then z = 1. If m > 0, y < 0,
-// and x and n are not relatively prime, z is unchanged and nil is returned.
+// If m == nil or m == 0, z = x**y unless y <= 0 then z = 1. If m != 0, y < 0,
+// and x and m are not relatively prime, z is unchanged and nil is returned.
 //
 // Modular exponentiation of inputs of a particular size is not a
 // cryptographically constant-time operation.