diff --git a/.gitignore b/.gitignore
index c4ab28c3..3e7a542c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+.idea
 /target/
 **/*.rs.bk
 Cargo.lock
diff --git a/src/js.rs b/src/js.rs
index 7e8ac062..b6c5598f 100644
--- a/src/js.rs
+++ b/src/js.rs
@@ -474,12 +474,80 @@ extern "C" {
     #[wasm_bindgen(static_method_of = Math)]
     pub fn clz32(x: i32) -> Number;
 
+    /// The Math.cos() static function returns the cosine of the specified angle,
+    /// which must be specified in radians. This value is length(adjacent)/length(hypotenuse).
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/cos
+    #[wasm_bindgen(static_method_of = Math)]
+    pub fn cos(x: f32) -> Number;
+
+
+    /// The Math.cosh() function returns the hyperbolic cosine of a number,
+    /// that can be expressed using the constant e.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/cosh
+    #[wasm_bindgen(static_method_of = Math)]
+    pub fn cosh(x: f32) -> Number;
+
+    /// The Math.exp() function returns e^x, where x is the argument, and e is Euler's number
+    /// (also known as Napier's constant), the base of the natural logarithms.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/exp
+    #[wasm_bindgen(static_method_of = Math)]
+    pub fn exp(x: f32) -> Number;
+
+    /// The Math.expm1() function returns e^x - 1, where x is the argument, and e the base of the
+    /// natural logarithms.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/expm1
+    #[wasm_bindgen(static_method_of = Math)]
+    pub fn expm1(x: f32) -> Number;
+
     /// The Math.floor() function returns the largest integer less than or
     /// equal to a given number.
     ///
     /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/floor
     #[wasm_bindgen(static_method_of = Math)]
     pub fn floor(x: f32) -> Number;
+
+    /// The Math.fround() function returns the nearest 32-bit single precision float representation
+    /// of a Number.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/fround
+    #[wasm_bindgen(static_method_of = Math)]
+    pub fn fround(x: f32) -> Number;
+
+    /// The Math.imul() function returns the result of the C-like 32-bit multiplication of the
+    /// two parameters.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/imul
+    #[wasm_bindgen(static_method_of = Math)]
+    pub fn imul(x: i32, y: i32) -> Number;
+
+    /// The Math.log() function returns the natural logarithm (base e) of a number.
+    /// The JavaScript Math.log() function is equivalent to ln(x) in mathematics.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/log
+    #[wasm_bindgen(static_method_of = Math)]
+    pub fn log(x: f32) -> Number;
+
+    /// The Math.log10() function returns the base 10 logarithm of a number.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/log10
+    #[wasm_bindgen(static_method_of = Math)]
+    pub fn log10(x: f32) -> Number;
+
+    /// The Math.log1p() function returns the natural logarithm (base e) of 1 + a number.
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/log1p
+    #[wasm_bindgen(static_method_of = Math)]
+    pub fn log1p(x: f32) -> Number;
+
+    /// The Math.log2() function returns the base 2 logarithm of a number.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/log2
+    #[wasm_bindgen(static_method_of = Math)]
+    pub fn log2(x: f32) -> Number;
+
 }
 
 // Number.
diff --git a/tests/all/js_globals/Math.rs b/tests/all/js_globals/Math.rs
index ef5558ef..3ebab39b 100644
--- a/tests/all/js_globals/Math.rs
+++ b/tests/all/js_globals/Math.rs
@@ -358,6 +358,117 @@ fn clz32() {
         .test()
 }
 
+#[test]
+fn cos() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn cos(x: f32) -> js::Number {
+                js::Math::cos(x)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                assert.equal(wasm.cos(0), 1);
+                assert.equal(wasm.cos(1.5), Math.cos(1.5));
+            }
+        "#)
+        .test()
+}
+
+#[test]
+fn cosh() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn cosh(x: f32) -> js::Number {
+                js::Math::cosh(x)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                assert.equal(wasm.cosh(0), 1);
+                assert.equal(wasm.cosh(2), 3.7621956910836314);
+            }
+        "#)
+        .test()
+}
+
+#[test]
+fn exp() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn exp(x: f32) -> js::Number {
+                js::Math::exp(x)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                assert.equal(wasm.exp(0), 1);
+                assert.equal(wasm.exp(-1), 0.36787944117144233);
+                assert.equal(wasm.exp(2), 7.38905609893065);
+            }
+        "#)
+        .test()
+}
+
+#[test]
+fn expm1() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn expm1(x: f32) -> js::Number {
+                js::Math::expm1(x)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                assert.equal(wasm.expm1(0), 0);
+                assert.equal(wasm.expm1(1), 1.718281828459045);
+                assert.equal(wasm.expm1(-1), -0.6321205588285577);
+                assert.equal(wasm.expm1(2), 6.38905609893065);
+            }
+        "#)
+        .test()
+}
+
 #[test]
 fn floor() {
     project()
@@ -390,3 +501,173 @@ fn floor() {
         )
         .test()
 }
+
+#[test]
+fn fround() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn fround(x: f32) -> js::Number {
+                js::Math::fround(x)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                assert.equal(wasm.fround(5.5), 5.5);
+                assert.equal(wasm.fround(5.05), 5.050000190734863);
+                assert.equal(wasm.fround(5), 5);
+                assert.equal(wasm.fround(-5.05), -5.050000190734863);
+            }
+        "#)
+        .test()
+}
+
+#[test]
+fn imul() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn imul(x: i32, y:i32) -> js::Number {
+                js::Math::imul(x, y)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                assert.equal(wasm.imul(3, 4), 12);
+                assert.equal(wasm.imul(-5, 12), -60);
+                assert.equal(wasm.imul(0xffffffff, 5), Math.imul(0xffffffff, 5));
+            }
+        "#)
+        .test()
+}
+
+#[test]
+fn log() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn log(x: f32) -> js::Number {
+                js::Math::log(x)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                assert.equal(wasm.log(8) / wasm.log(2), 3);
+                assert.equal(wasm.log(625) / wasm.log(5), 4);
+            }
+        "#)
+        .test()
+}
+
+#[test]
+fn log10() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn log10(x: f32) -> js::Number {
+                js::Math::log10(x)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                assert.equal(wasm.log10(100000), 5);
+                assert.equal(wasm.log10(1), 0);
+                assert.equal(wasm.log10(2), 0.3010299956639812);
+            }
+        "#)
+        .test()
+}
+
+#[test]
+fn log1p() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn log1p(x: f32) -> js::Number {
+                js::Math::log1p(x)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                assert.equal(wasm.log1p(1), 0.6931471805599453);
+                assert.equal(wasm.log1p(0), 0);
+                assert.equal(wasm.log1p(-1), -Infinity);
+                assert(isNaN(wasm.log1p(-2)));
+            }
+        "#)
+        .test()
+}
+
+#[test]
+fn log2() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn log2(x: f32) -> js::Number {
+                js::Math::log2(x)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                assert.equal(wasm.log2(3), 1.584962500721156);
+                assert.equal(wasm.log2(2), 1);
+                assert.equal(wasm.log2(1), 0);
+                assert.equal(wasm.log2(0), -Infinity);
+            }
+        "#)
+        .test()
+}
\ No newline at end of file