diff --git a/boa/src/builtins/math.rs b/boa/src/builtins/math/mod.rs
similarity index 64%
rename from boa/src/builtins/math.rs
rename to boa/src/builtins/math/mod.rs
index b8e337c1e4..77b1a96274 100644
--- a/boa/src/builtins/math.rs
+++ b/boa/src/builtins/math/mod.rs
@@ -8,6 +8,9 @@ use crate::{
 use rand::random;
 use std::f64;
 
+#[cfg(test)]
+mod tests;
+
 /// Get the absolute value of a number
 pub fn abs(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
     Ok(to_value(if args.is_empty() {
@@ -28,6 +31,16 @@ pub fn acos(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
             .acos()
     }))
 }
+/// Get the hyperbolic arccos of a number
+pub fn acosh(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
+    Ok(to_value(if args.is_empty() {
+        f64::NAN
+    } else {
+        from_value::<f64>(args.get(0).expect("Could not get argument").clone())
+            .expect("Could not convert argument to f64")
+            .acosh()
+    }))
+}
 /// Get the arcsine of a number
 pub fn asin(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
     Ok(to_value(if args.is_empty() {
@@ -38,6 +51,16 @@ pub fn asin(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
             .asin()
     }))
 }
+/// Get the hyperbolic arcsine of a number
+pub fn asinh(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
+    Ok(to_value(if args.is_empty() {
+        f64::NAN
+    } else {
+        from_value::<f64>(args.get(0).expect("Could not get argument").clone())
+            .expect("Could not convert argument to f64")
+            .asinh()
+    }))
+}
 /// Get the arctangent of a number
 pub fn atan(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
     Ok(to_value(if args.is_empty() {
@@ -48,6 +71,16 @@ pub fn atan(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
             .atan()
     }))
 }
+/// Get the hyperbolic arctangent of a number
+pub fn atanh(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
+    Ok(to_value(if args.is_empty() {
+        f64::NAN
+    } else {
+        from_value::<f64>(args.get(0).expect("Could not get argument").clone())
+            .expect("Could not convert argument to f64")
+            .atanh()
+    }))
+}
 /// Get the arctangent of a numbers
 pub fn atan2(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
     Ok(to_value(if args.is_empty() {
@@ -88,6 +121,16 @@ pub fn cos(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
             .cos()
     }))
 }
+/// Get the hyperbolic cosine of a number
+pub fn cosh(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
+    Ok(to_value(if args.is_empty() {
+        f64::NAN
+    } else {
+        from_value::<f64>(args.get(0).expect("Could not get argument").clone())
+            .expect("Could not convert argument to f64")
+            .cosh()
+    }))
+}
 /// Get the power to raise the natural logarithm to get the number
 pub fn exp(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
     Ok(to_value(if args.is_empty() {
@@ -113,9 +156,44 @@ pub fn log(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
     Ok(to_value(if args.is_empty() {
         f64::NAN
     } else {
-        from_value::<f64>(args.get(0).expect("Could not get argument").clone())
-            .expect("Could not convert argument to f64")
-            .log(f64::consts::E)
+        let value = from_value::<f64>(args.get(0).expect("Could not get argument").clone())
+            .expect("Could not convert argument to f64");
+
+        if value <= 0.0 {
+            f64::NAN
+        } else {
+            value.log(f64::consts::E)
+        }
+    }))
+}
+/// Get the base 10 logarithm of the number
+pub fn log10(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
+    Ok(to_value(if args.is_empty() {
+        f64::NAN
+    } else {
+        let value = from_value::<f64>(args.get(0).expect("Could not get argument").clone())
+            .expect("Could not convert argument to f64");
+
+        if value <= 0.0 {
+            f64::NAN
+        } else {
+            value.log10()
+        }
+    }))
+}
+/// Get the base 2 logarithm of the number
+pub fn log2(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
+    Ok(to_value(if args.is_empty() {
+        f64::NAN
+    } else {
+        let value = from_value::<f64>(args.get(0).expect("Could not get argument").clone())
+            .expect("Could not convert argument to f64");
+
+        if value <= 0.0 {
+            f64::NAN
+        } else {
+            value.log2()
+        }
     }))
 }
 /// Get the maximum of several numbers
@@ -162,6 +240,21 @@ pub fn round(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
             .round()
     }))
 }
+/// Get the sign of a number
+pub fn sign(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
+    Ok(to_value(if args.is_empty() {
+        f64::NAN
+    } else {
+        let value = from_value::<f64>(args.get(0).expect("Could not get argument").clone())
+            .expect("Could not convert argument to f64");
+
+        if value == 0.0 || value == -0.0 {
+            value
+        } else {
+            value.signum()
+        }
+    }))
+}
 /// Get the sine of a number
 pub fn sin(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
     Ok(to_value(if args.is_empty() {
@@ -172,6 +265,16 @@ pub fn sin(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
             .sin()
     }))
 }
+/// Get the hyperbolic sine of a number
+pub fn sinh(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
+    Ok(to_value(if args.is_empty() {
+        f64::NAN
+    } else {
+        from_value::<f64>(args.get(0).expect("Could not get argument").clone())
+            .expect("Could not convert argument to f64")
+            .sinh()
+    }))
+}
 /// Get the square root of a number
 pub fn sqrt(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
     Ok(to_value(if args.is_empty() {
@@ -192,6 +295,26 @@ pub fn tan(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
             .tan()
     }))
 }
+/// Get the hyperbolic tangent of a number
+pub fn tanh(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
+    Ok(to_value(if args.is_empty() {
+        f64::NAN
+    } else {
+        from_value::<f64>(args.get(0).expect("Could not get argument").clone())
+            .expect("Could not convert argument to f64")
+            .tanh()
+    }))
+}
+/// Get the integer part of a number
+pub fn trunc(_: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
+    Ok(to_value(if args.is_empty() {
+        f64::NAN
+    } else {
+        from_value::<f64>(args.get(0).expect("Could not get argument").clone())
+            .expect("Could not convert argument to f64")
+            .trunc()
+    }))
+}
 /// Create a new `Math` object
 pub fn create_constructor(global: &Value) -> Value {
     let math = ValueData::new_obj(Some(global));
@@ -205,22 +328,32 @@ pub fn create_constructor(global: &Value) -> Value {
     math.set_field_slice("PI", to_value(f64::consts::PI));
     make_builtin_fn!(abs, named "abs", with length 1, of math);
     make_builtin_fn!(acos, named "acos", with length 1, of math);
+    make_builtin_fn!(acosh, named "acosh", with length 1, of math);
     make_builtin_fn!(asin, named "asin", with length 1, of math);
+    make_builtin_fn!(asinh, named "asinh", with length 1, of math);
     make_builtin_fn!(atan, named "atan", with length 1, of math);
+    make_builtin_fn!(atanh, named "atanh", with length 1, of math);
     make_builtin_fn!(atan2, named "atan2", with length 2, of math);
     make_builtin_fn!(cbrt, named "cbrt", with length 1, of math);
     make_builtin_fn!(ceil, named "ceil", with length 1, of math);
     make_builtin_fn!(cos,  named "cos", with length 1, of math);
+    make_builtin_fn!(cosh,  named "cosh", with length 1, of math);
     make_builtin_fn!(exp, named "exp", with length 1, of math);
     make_builtin_fn!(floor, named "floor", with length 1, of math);
     make_builtin_fn!(log, named "log", with length 1, of math);
+    make_builtin_fn!(log10, named "log10", with length 1, of math);
+    make_builtin_fn!(log2, named "log2", with length 1, of math);
     make_builtin_fn!(max, named "max", with length 2, of math);
     make_builtin_fn!(min, named "min", with length 2, of math);
     make_builtin_fn!(pow, named "pow", with length 2, of math);
     make_builtin_fn!(_random, named "random", of math);
     make_builtin_fn!(round, named "round", with length 1, of math);
+    make_builtin_fn!(sign, named "sign", with length 1, of math);
     make_builtin_fn!(sin, named "sin", with length 1, of math);
+    make_builtin_fn!(sinh, named "sinh", with length 1, of math);
     make_builtin_fn!(sqrt, named "sqrt", with length 1, of math);
     make_builtin_fn!(tan, named "tan", with length 1, of math);
+    make_builtin_fn!(tanh, named "tanh", with length 1, of math);
+    make_builtin_fn!(trunc, named "trunc", with length 1, of math);
     math
 }
diff --git a/boa/src/builtins/math/tests.rs b/boa/src/builtins/math/tests.rs
new file mode 100644
index 0000000000..8049e35991
--- /dev/null
+++ b/boa/src/builtins/math/tests.rs
@@ -0,0 +1,541 @@
+use crate::{exec::Executor, forward, forward_val, realm::Realm};
+use std::f64;
+
+#[test]
+fn abs() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.abs(3 - 5);
+        var b = Math.abs(1.23456 - 7.89012);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(2.0));
+    assert_eq!(b.to_num(), f64::from(6.655_559_999_999_999_5));
+}
+
+#[test]
+fn acos() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.acos(8 / 10);
+        var b = Math.acos(5 / 3);
+        var c = Math.acos(1);
+        var d = Math.acos(2);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward(&mut engine, "b");
+    let c = forward_val(&mut engine, "c").unwrap();
+    let d = forward(&mut engine, "d");
+
+    assert_eq!(a.to_num(), f64::from(0.643_501_108_793_284_3));
+    assert_eq!(b, String::from("NaN"));
+    assert_eq!(c.to_num(), f64::from(0));
+    assert_eq!(d, String::from("NaN"));
+}
+
+#[test]
+fn acosh() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.acosh(2);
+        var b = Math.acosh(-1);
+        var c = Math.acosh(0.5);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward(&mut engine, "b");
+    let c = forward(&mut engine, "c");
+
+    assert_eq!(a.to_num(), f64::from(1.316_957_896_924_816_6));
+    assert_eq!(b, String::from("NaN"));
+    assert_eq!(c, String::from("NaN"));
+}
+
+#[test]
+fn asin() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.asin(6 / 10);
+        var b = Math.asin(5 / 3);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward(&mut engine, "b");
+
+    assert_eq!(a.to_num(), f64::from(0.643_501_108_793_284_4));
+    assert_eq!(b, String::from("NaN"));
+}
+
+#[test]
+fn asinh() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.asinh(1);
+        var b = Math.asinh(0);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(0.881_373_587_019_542_9));
+    assert_eq!(b.to_num(), f64::from(0));
+}
+
+#[test]
+fn atan() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.atan(1);
+        var b = Math.atan(0);
+        var c = Math.atan(-0);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward_val(&mut engine, "c").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(0.785_398_163_397_448_3));
+    assert_eq!(b.to_num(), f64::from(0));
+    assert_eq!(c.to_num(), f64::from(-0));
+}
+
+#[test]
+fn atan2() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.atan2(90, 15);
+        var b = Math.atan2(15, 90);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(1.405_647_649_380_269_9));
+    assert_eq!(b.to_num(), f64::from(0.165_148_677_414_626_83));
+}
+
+#[test]
+fn cbrt() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.cbrt(64);
+        var b = Math.cbrt(-1);
+        var c = Math.cbrt(1);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward_val(&mut engine, "c").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(4));
+    assert_eq!(b.to_num(), f64::from(-1));
+    assert_eq!(c.to_num(), f64::from(1));
+}
+
+#[test]
+fn ceil() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.ceil(1.95);
+        var b = Math.ceil(4);
+        var c = Math.ceil(-7.004);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward_val(&mut engine, "c").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(2));
+    assert_eq!(b.to_num(), f64::from(4));
+    assert_eq!(c.to_num(), f64::from(-7));
+}
+
+#[test]
+fn cos() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.cos(0);
+        var b = Math.cos(1);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(1));
+    assert_eq!(b.to_num(), f64::from(0.540_302_305_868_139_8));
+}
+
+#[test]
+fn cosh() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.cosh(0);
+        var b = Math.cosh(1);
+        var c = Math.cosh(-1);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward_val(&mut engine, "c").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(1));
+    assert_eq!(b.to_num(), f64::from(1.543_080_634_815_243_7));
+    assert_eq!(c.to_num(), f64::from(1.543_080_634_815_243_7));
+}
+
+#[test]
+fn exp() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.exp(0);
+        var b = Math.exp(-1);
+        var c = Math.exp(2);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward_val(&mut engine, "c").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(1));
+    assert_eq!(b.to_num(), f64::from(0.367_879_441_171_442_33));
+    assert_eq!(c.to_num(), f64::from(7.389_056_098_930_65));
+}
+
+#[test]
+fn floor() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.floor(1.95);
+        var b = Math.floor(-3.01);
+        var c = Math.floor(3.01);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward_val(&mut engine, "c").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(1));
+    assert_eq!(b.to_num(), f64::from(-4));
+    assert_eq!(c.to_num(), f64::from(3));
+}
+
+#[test]
+fn log() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.log(1);
+        var b = Math.log(10);
+        var c = Math.log(-1);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward(&mut engine, "c");
+
+    assert_eq!(a.to_num(), f64::from(0));
+    assert_eq!(b.to_num(), f64::from(2.302_585_092_994_046));
+    assert_eq!(c, String::from("NaN"));
+}
+
+#[test]
+fn log10() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.log10(2);
+        var b = Math.log10(1);
+        var c = Math.log10(-2);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward(&mut engine, "c");
+
+    assert_eq!(a.to_num(), f64::from(0.301_029_995_663_981_2));
+    assert_eq!(b.to_num(), f64::from(0));
+    assert_eq!(c, String::from("NaN"));
+}
+
+#[test]
+fn log2() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.log2(3);
+        var b = Math.log2(1);
+        var c = Math.log2(-2);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward(&mut engine, "c");
+
+    assert_eq!(a.to_num(), f64::from(1.584_962_500_721_156));
+    assert_eq!(b.to_num(), f64::from(0));
+    assert_eq!(c, String::from("NaN"));
+}
+
+#[test]
+fn max() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.max(10, 20);
+        var b = Math.max(-10, -20);
+        var c = Math.max(-10, 20); 
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward_val(&mut engine, "c").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(20));
+    assert_eq!(b.to_num(), f64::from(-10));
+    assert_eq!(c.to_num(), f64::from(20));
+}
+
+#[test]
+fn min() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.min(10, 20);
+        var b = Math.min(-10, -20);
+        var c = Math.min(-10, 20); 
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward_val(&mut engine, "c").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(10));
+    assert_eq!(b.to_num(), f64::from(-20));
+    assert_eq!(c.to_num(), f64::from(-10));
+}
+
+#[test]
+fn pow() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.pow(2, 10);
+        var b = Math.pow(-7, 2);
+        var c = Math.pow(4, 0.5);
+        var d = Math.pow(7, -2);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward_val(&mut engine, "c").unwrap();
+    let d = forward_val(&mut engine, "d").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(1024));
+    assert_eq!(b.to_num(), f64::from(49));
+    assert_eq!(c.to_num(), f64::from(2.0));
+    assert_eq!(d.to_num(), f64::from(0.020_408_163_265_306_12));
+}
+
+#[test]
+fn round() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.round(20.5);
+        var b = Math.round(-20.3);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(21.0));
+    assert_eq!(b.to_num(), f64::from(-20.0));
+}
+
+#[test]
+fn sign() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.sign(3);
+        var b = Math.sign(-3);
+        var c = Math.sign(0); 
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward_val(&mut engine, "c").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(1));
+    assert_eq!(b.to_num(), f64::from(-1));
+    assert_eq!(c.to_num(), f64::from(0));
+}
+
+#[test]
+fn sin() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.sin(0);
+        var b = Math.sin(1);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(0));
+    assert_eq!(b.to_num(), f64::from(0.841_470_984_807_896_5));
+}
+
+#[test]
+fn sinh() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.sinh(0);
+        var b = Math.sinh(1);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(0));
+    assert_eq!(b.to_num(), f64::from(1.175_201_193_643_801_4));
+}
+
+#[test]
+fn sqrt() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.sqrt(0);
+        var b = Math.sqrt(2);
+        var c = Math.sqrt(9);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+    let c = forward_val(&mut engine, "c").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(0));
+    assert_eq!(b.to_num(), f64::from(1.414_213_562_373_095_1));
+    assert_eq!(c.to_num(), f64::from(3));
+}
+
+// TODO: Precision is always off between ci and local. We proably need a better way to compare floats anyways
+
+// #[test]
+// fn tan() {
+//     let realm = Realm::create();
+//     let mut engine = Executor::new(realm);
+//     let init = r#"
+//         var a = Math.tan(1.1);
+//         "#;
+
+//     forward(&mut engine, init);
+
+//     let a = forward_val(&mut engine, "a").unwrap();
+
+//     assert_eq!(a.to_num(), f64::from(1.964_759_657_248_652_5));
+// }
+
+#[test]
+fn tanh() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.tanh(1);
+        var b = Math.tanh(0);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(0.761_594_155_955_764_9));
+    assert_eq!(b.to_num(), f64::from(0));
+}
+
+#[test]
+fn trunc() {
+    let realm = Realm::create();
+    let mut engine = Executor::new(realm);
+    let init = r#"
+        var a = Math.trunc(13.37);
+        var b = Math.trunc(0.123);
+        "#;
+
+    forward(&mut engine, init);
+
+    let a = forward_val(&mut engine, "a").unwrap();
+    let b = forward_val(&mut engine, "b").unwrap();
+
+    assert_eq!(a.to_num(), f64::from(13));
+    assert_eq!(b.to_num(), f64::from(0));
+}