Make sure the random numbers are in the correct range

Author: amatgil

src/algorithm/dyadic/mod.rs

@@ -2124,7 +2124,7 @@ impl Value {
             let elem_count = validate_size::<f64>(shape.iter().copied(), env)?;
             let mut data = eco_vec![0.0; elem_count];
             for x in data.make_mut() {
-                *x = f64::from_bits(rng.next_u64());
+                *x = f64::from_bits(rng.next_u64() >> 12 | 0x3FF0_0000_0000_0000) - 1.0;
             }
             Ok(Array::new(shape, data))
         };

src/algorithm/monadic/sort.rs

@@ -1,10 +1,7 @@
 use std::{cmp::Ordering, ptr};
 
 use ecow::EcoVec;
-use rand_xoshiro::{
-    rand_core::{RngCore, SeedableRng},
-    Xoshiro256Plus,
-};
+use rand_xoshiro::rand_core::RngCore;
 use rayon::prelude::*;
 
 use crate::{algorithm::ArrayCmpSlice, random_with, val_as_arr, Array, ArrayValue, Value};

src/run_prim.rs

@@ -14,7 +14,6 @@ use std::{
     collections::HashMap,
     f64::consts::{PI, TAU},
     iter::repeat_n,
-    mem::transmute,
     sync::{
         atomic::{self, AtomicUsize},
         OnceLock,
@@ -1780,7 +1779,7 @@ thread_local! {
 
 /// Generate a random number, equivalent to [`Primitive::Rand`]
 pub fn random() -> f64 {
-    random_with(|rng| f64::from_bits(rng.next_u64()))
+    random_with(|rng| f64::from_bits(rng.next_u64() >> 12 | 0x3FF0_0000_0000_0000) - 1.0)
 }
 
 /// Access the interpreter's random number generator for the thread