From 4624b2999fa2f92964503898260d6d19ccf97011 Mon Sep 17 00:00:00 2001
From: Stokalas <gytis.becalis@gmail.com>
Date: Tue, 19 Oct 2021 21:41:07 +0300
Subject: [PATCH 1/2] example of wrapper

---
 kzg10-rust/kzg/src/kzg10.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/kzg10-rust/kzg/src/kzg10.rs b/kzg10-rust/kzg/src/kzg10.rs
index 669a0310..9925dfb0 100644
--- a/kzg10-rust/kzg/src/kzg10.rs
+++ b/kzg10-rust/kzg/src/kzg10.rs
@@ -1,5 +1,7 @@
 use std::{cmp::min, ops, iter};
 use crate::data_types::{fr::*, g1::*, g2::*, gt::*};
+use crate::{BlstFr};
+use crate::data_converter::fr_converter::*;
 use crate::mcl_methods::{pairing, final_exp, mclBn_FrEvaluatePolynomial};
 
 const G1_GEN_X: &str = "3685416753713387016781088315183077757961620795782546409894578378688607592378376318836054947676345821548104185464507";
@@ -199,7 +201,12 @@ impl Polynomial {
         self.coeffs.len()
     }
 
-    pub fn eval_at(&self, point: &Fr) -> Fr {
+    // pub fn eval_at(&self, point: &BlstFr) -> BlstFr {
+    //     let pointFromBlst = frFromBlst(*point);
+    //     return frToBlst(self.eval_at_mcl(&pointFromBlst));
+    // }
+
+    pub fn eval_at_mcl(&self, point: &Fr) -> Fr {
         let mut result = Fr::default();
         unsafe { 
             mclBn_FrEvaluatePolynomial(&mut result, self.coeffs.as_ptr(), self.order(), point)

From 2c5c957283d5b79c1fc56aa4e881d8fb1cb34afc Mon Sep 17 00:00:00 2001
From: Stokalas <gytis.becalis@gmail.com>
Date: Tue, 19 Oct 2021 22:03:04 +0300
Subject: [PATCH 2/2] changed principle of Fr conversion

---
 .../kzg/src/data_converter/fr_converter.rs    | 42 +++++++++++--------
 kzg10-rust/kzg/src/data_types/fr.rs           |  2 +-
 2 files changed, 26 insertions(+), 18 deletions(-)

diff --git a/kzg10-rust/kzg/src/data_converter/fr_converter.rs b/kzg10-rust/kzg/src/data_converter/fr_converter.rs
index 77c3ffb0..df3fa69a 100644
--- a/kzg10-rust/kzg/src/data_converter/fr_converter.rs
+++ b/kzg10-rust/kzg/src/data_converter/fr_converter.rs
@@ -1,18 +1,26 @@
-use crate::data_types::fr::Fr;
-use crate::BlstFr;
-
-pub fn frFromBlst(fr: BlstFr) -> Fr {
-    let mut result = Fr::default();
-    for i in 0..4 {
-        result.d[i] = fr.l[i];
-    }
-    return result;
-}
-
-pub fn frToBlst(fr: Fr) -> BlstFr {
-    let mut result = BlstFr::default();
-    for i in 0..4 {
-        result.l[i] = fr.d[i];
-    }
-    return result;
+use crate::data_types::fr::Fr;
+use crate::BlstFr;
+
+pub fn frFromBlst(fr: BlstFr) -> Fr {
+    let mut intValue: u64 = 0;
+    let frBlst = fr;
+    unsafe {
+        blst::blst_uint64_from_fr(&mut intValue, &frBlst);
+    }
+    let i32Value = intValue as i32;//could cause problems
+    return Fr::from_int(i32Value);
+    
+    // let mut result = Fr::default();
+    // for i in 0..4 {
+    //     result.d[i] = fr.l[i];
+    // }
+    // return result;
+}
+
+pub fn frToBlst(fr: Fr) -> BlstFr {
+    let mut result = BlstFr::default();
+    for i in 0..4 {
+        result.l[i] = fr.d[i];
+    }
+    return result;
 }
\ No newline at end of file
diff --git a/kzg10-rust/kzg/src/data_types/fr.rs b/kzg10-rust/kzg/src/data_types/fr.rs
index cebea839..ff12b221 100644
--- a/kzg10-rust/kzg/src/data_types/fr.rs
+++ b/kzg10-rust/kzg/src/data_types/fr.rs
@@ -43,7 +43,7 @@ extern "C" {
 #[derive(Default, Debug, Clone)]
 #[repr(C)]
 pub struct Fr {
-    pub d: [u64; crate::MCLBN_FR_UNIT_SIZE],
+    d: [u64; crate::MCLBN_FR_UNIT_SIZE],
 }
 impl Fr {
     pub fn get_order() -> String {