make NO_CARRY a const param now, instantiate fns for each # $limbs

Author: jon-chuang

ff/Cargo.toml

@@ -23,6 +23,7 @@ num-traits = { version = "0.2", default-features = false }
 rand = { version = "0.7", default-features = false }
 rayon = { version = "1", optional = true }
 zeroize = { version = "1", default-features = false, features = ["zeroize_derive"] }
+paste = "1.0.4"
 
 [build-dependencies]
 rustc_version = "0.3"