[wasm] [asm.js] Fix various asm.js issues.

test/mjsunit/wasm/asm-wasm-f64.js

Index: test/mjsunit/wasm/asm-wasm-f64.js
diff --git a/test/mjsunit/wasm/asm-wasm-f64.js b/test/mjsunit/wasm/asm-wasm-f64.js
index 1fd51ff9d5cebf412e7dbdbd761842594b52500e..c7b439fedea7527d35473b2325e34bcfc419457f 100644
--- a/test/mjsunit/wasm/asm-wasm-f64.js
+++ b/test/mjsunit/wasm/asm-wasm-f64.js
@@ -205,21 +205,25 @@ function f64_tan(a) {
   return +Math_tan(+a);
 }
 
-function f64_exp(a, b) {
+function f64_exp(a) {
   a = +a;
-  b = +b;
-  return +Math_exp(+a, +b);
+  return +Math_exp(+a);
+}
+
+function f64_log(a) {
+  a = +a;
+  return +Math_log(+a);
 }
 
-function f64_log(a, b) {
+function f64_atan2(a, b) {
   a = +a;
   b = +b;
-  return +Math_log(+a, +b);
+  return +Math_atan2(+a, +b);
 }
 
-function f64_atan2(a) {
+function f64_neg(a) {
   a = +a;
-  return +Math_atan2(+a);
+  return +(-a);
 }
 
 
@@ -272,17 +276,18 @@ var funcs = [
   f64_floor,
 // TODO(bradnelson) f64_sqrt,
   f64_abs,
+  f64_neg,
 // TODO(bradnelson) f64_min is wrong for -0
 // TODO(bradnelson) f64_max is wrong for -0
-// TODO(bradnelson) f64_acos,
-// TODO(bradnelson) f64_asin,
-// TODO(bradnelson) f64_atan,
-// TODO(bradnelson) f64_cos,
-// TODO(bradnelson) f64_sin,
-// TODO(bradnelson) f64_tan,
-// TODO(bradnelson) f64_exp,
-// TODO(bradnelson) f64_log,
-// TODO(bradnelson) f64_atan2,
+  f64_acos,
+  f64_asin,
+  f64_atan,
+  f64_cos,
+  f64_sin,
+  f64_tan,
+  f64_exp,
+  f64_log,
+  f64_atan2,
 ];
 
 (function () {