From aa0494831941151ffd71844c000a38c52b0fe1d4 Mon Sep 17 00:00:00 2001
From: fangjw <fangjw@wecut.com>
Date: Tue, 25 May 2021 16:10:52 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E6=B5=AE=E7=82=B9=E5=9E=8B?=
 =?UTF-8?q?=E6=8E=92=E5=BA=8F?=
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原因：
返回值，强制转成 int 类型，会导致浮点型比较不准确，例如：0.33，转成 int 类型时，会变成 0
---
 util/gutil/gutil_comparator.go | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/util/gutil/gutil_comparator.go b/util/gutil/gutil_comparator.go
index 3c902d601..9c9280790 100644
--- a/util/gutil/gutil_comparator.go
+++ b/util/gutil/gutil_comparator.go
@@ -77,12 +77,28 @@ func ComparatorUint64(a, b interface{}) int {
 
 // ComparatorFloat32 provides a basic comparison on float32.
 func ComparatorFloat32(a, b interface{}) int {
-	return int(gconv.Float32(a) - gconv.Float32(b))
+	aFloat := gconv.Float64(a)
+	bFloat := gconv.Float64(b)
+	if aFloat == bFloat{
+		return 0
+	}
+	if aFloat > bFloat{
+		return 1
+	}
+	return -1
 }
 
 // ComparatorFloat64 provides a basic comparison on float64.
 func ComparatorFloat64(a, b interface{}) int {
-	return int(gconv.Float64(a) - gconv.Float64(b))
+	aFloat := gconv.Float64(a)
+	bFloat := gconv.Float64(b)
+	if aFloat == bFloat{
+		return 0
+	}
+	if aFloat > bFloat{
+		return 1
+	}
+	return -1
 }
 
 // ComparatorByte provides a basic comparison on byte.