fix no-std

math/src/circle/cosets.rs

@@ -1,7 +1,6 @@
 extern crate alloc;
 use crate::circle::point::CirclePoint;
 use crate::field::fields::mersenne31::field::Mersenne31Field;
-use alloc::vec::Vec;
 
 /// Given g_n, a generator of the subgroup <g_n> of the circle of size n,
 /// and given a shift, that is a another point of the cirvle,

math/src/circle/polynomial.rs

@@ -2,13 +2,12 @@ use crate::{
     fft::cpu::bit_reversing::in_place_bit_reverse_permute,
     field::{element::FieldElement, fields::mersenne31::field::Mersenne31Field},
 };
-
+#[cfg(feature = "alloc")]
 use super::{
     cfft::{cfft, icfft, order_cfft_result_naive, order_icfft_input_naive},
     cosets::Coset,
     twiddles::{get_twiddles, TwiddlesConfig},
 };
-use alloc::vec::Vec;
 
 /// Given the 2^n coefficients of a two-variables polynomial of degree 2^n - 1 in the basis {1, y, x, xy, 2xˆ2 -1, 2xˆ2y-y, 2xˆ3-x, 2xˆ3y-xy,...}
 /// returns the evaluation of the polynomial on the points of the standard coset of size 2^n.

math/src/circle/twiddles.rs

@@ -3,8 +3,6 @@ use crate::{
     circle::cosets::Coset,
     field::{element::FieldElement, fields::mersenne31::field::Mersenne31Field},
 };
-use alloc::vec;
-use alloc::vec::Vec;
 
 #[derive(PartialEq)]
 pub enum TwiddlesConfig {