remove rust-strictmath

Author: loyispa

Cargo.toml

@@ -10,5 +10,4 @@ homepage = "https://github.com/loyispa/sketches-rust"
 description = "Rust implementation of DDSketch."
 exclude = [".gitignore"]
 
-[dependencies]
-rust-strictmath = "0.1.1"
+[dependencies]

src/index_mapping/mod.rs

@@ -1,6 +1,5 @@
 use crate::sketch::{Flag, FlagType};
 use crate::{serde, Error};
-use rust_strictmath::cbrt;
 
 use crate::output::Output;
 
@@ -160,7 +159,7 @@ impl IndexMapping {
                         * CUBICALLY_INTERPOLATED_MAPPING_A
                         * CUBICALLY_INTERPOLATED_MAPPING_A
                         * (index - index.floor());
-                let p: f64 = cbrt((d1 - (d1 * d1 - 4.0 * d0 * d0 * d0).sqrt()) / 2.0);
+                let p: f64 = ((d1 - (d1 * d1 - 4.0 * d0 * d0 * d0).sqrt()) / 2.0).cbrt();
                 let significand_plus_one: f64 = -(CUBICALLY_INTERPOLATED_MAPPING_B + p + d0 / p)
                     / (3.0 * CUBICALLY_INTERPOLATED_MAPPING_A)
                     + 1.0;