From b98a9fe65a561ecaf45939fd77a82f8c327c174a Mon Sep 17 00:00:00 2001
From: arnaucube <root@arnaucube.com>
Date: Mon, 20 Apr 2020 12:45:35 +0200
Subject: [PATCH] Add utils.ElementArrayToBigIntArray

---
 utils/utils.go | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/utils/utils.go b/utils/utils.go
index 49020f6..51ca54c 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -103,6 +103,7 @@ func CheckBigIntArrayInField(arr []*big.Int) bool {
 	return true
 }
 
+// BigIntArrayToElementArray converts an array of *big.Int into an array of *ff.Element
 func BigIntArrayToElementArray(bi []*big.Int) []*ff.Element {
 	var o []*ff.Element
 	for i := range bi {
@@ -110,3 +111,15 @@ func BigIntArrayToElementArray(bi []*big.Int) []*ff.Element {
 	}
 	return o
 }
+
+// ElementArrayToBigIntArray converts an array of *ff.Element into an array of *big.Int
+func ElementArrayToBigIntArray(e []*ff.Element) []*big.Int {
+	var o []*big.Int
+	for i := range e {
+		ei := e[i]
+		bi := big.NewInt(0)
+		ei.ToBigIntRegular(bi)
+		o = append(o, bi)
+	}
+	return o
+}