From ba54fe14183e144863b9bdadd7beb903d5ca86f7 Mon Sep 17 00:00:00 2001
From: vasilbekk <vasilbekk@mail.ru>
Date: Sat, 1 Oct 2022 13:47:11 +0300
Subject: [PATCH 1/3] Added varible StringTrimTrailingZeros and comment for it

---
 decimal.go | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/decimal.go b/decimal.go
index c614ea7..84dd32f 100644
--- a/decimal.go
+++ b/decimal.go
@@ -52,6 +52,14 @@ var DivisionPrecision = 16
 // silently lose precision.
 var MarshalJSONWithoutQuotes = false
 
+// StringTrimTrailingZeros should be set to false if you want the decimal stringify without zeros trailing.
+// By default, when decimal is output as a string (for example, in JSON), zeros are truncated from it (2.00 -> 2, 3.11 -> 3.11, 13.000 -> 13).
+// But this logic can be changed by this variable.
+// For example, if you have numeric(10,2) values stored in your database,
+// and you want your API response to always be given 2 decimal places (even 2.00, 3.00, 17.00 [not 2,3,17]),
+// then this variable is a great way out.
+var StringTrimTrailingZeros = true
+
 // ExpMaxIterations specifies the maximum number of iterations needed to calculate
 // precise natural exponent value using ExpHullAbrham method.
 var ExpMaxIterations = 1000
@@ -1022,7 +1030,7 @@ func (d Decimal) InexactFloat64() float64 {
 //     -12.345
 //
 func (d Decimal) String() string {
-	return d.string(true)
+	return d.string(StringTrimTrailingZeros)
 }
 
 // StringFixed returns a rounded fixed-point string with places digits after

From d23c457004b890e4b2604217bdf9ca81365b97f7 Mon Sep 17 00:00:00 2001
From: vasilbekk <vasilbekk@mail.ru>
Date: Sat, 1 Oct 2022 14:02:56 +0300
Subject: [PATCH 2/3] Added unittests

---
 decimal_test.go | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/decimal_test.go b/decimal_test.go
index 2b3a99e..14b135d 100644
--- a/decimal_test.go
+++ b/decimal_test.go
@@ -3339,3 +3339,51 @@ func ExampleNewFromFloat() {
 	//0.123123123123123
 	//-10000000000000
 }
+
+func TestDecimal_String(t *testing.T) {
+	type testData struct {
+		input string
+		expected string
+	}
+
+	tests := []testData{
+		{"1.22", "1.22"},
+		{"1.00", "1"},
+		{"153.192", "153.192"},
+		{"999.999", "999.999"},
+		{"0.0000000001", "0.0000000001"},
+		{"0.0000000000", "0"},
+	}
+
+	for _, test := range tests {
+		d, err := NewFromString(test.input);
+		if err != nil {
+			t.Fatal(err)
+		} else if d.String() != test.expected {
+			t.Errorf("expected %s, got %s", test.expected, d.String())
+		}
+	}
+
+	defer func() {
+		StringTrimTrailingZeros = true
+	}()
+
+	StringTrimTrailingZeros = false
+	tests = []testData{
+		{"1.00", "1.00"},
+		{"0.00", "0.00"},
+		{"129.123000", "129.123000"},
+	}
+
+	for _, test := range tests {
+		d, err := NewFromString(test.input);
+		if err != nil {
+			t.Fatal(err)
+		} else if d.String() != test.expected {
+			t.Errorf("expected %s, got %s", test.expected, d.String())
+		}
+	}
+
+
+
+}
\ No newline at end of file

From 6e54f647f022cc99bd67f8fd995e7db67a2ed2df Mon Sep 17 00:00:00 2001
From: vasilbekk <vasilbekk@mail.ru>
Date: Sat, 1 Oct 2022 14:20:16 +0300
Subject: [PATCH 3/3] Newline in end file

---
 decimal_test.go | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/decimal_test.go b/decimal_test.go
index 14b135d..5c34a1b 100644
--- a/decimal_test.go
+++ b/decimal_test.go
@@ -3383,7 +3383,4 @@ func TestDecimal_String(t *testing.T) {
 			t.Errorf("expected %s, got %s", test.expected, d.String())
 		}
 	}
-
-
-
-}
\ No newline at end of file
+}