[builtins] Introduce proper Float64Tan operator.

src/builtins.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_BUILTINS_H_
 #define V8_BUILTINS_H_
 
 #include "src/base/flags.h"
 #include "src/handles.h"
 
@@ skipping 301 matching lines @@
   V(MathClz32, 2)                     \
   V(MathCos, 2)                       \
   V(MathExp, 2)                       \
   V(MathFloor, 2)                     \
   V(MathLog, 2)                       \
   V(MathLog1p, 2)                     \
   V(MathLog2, 2)                      \
   V(MathLog10, 2)                     \
   V(MathRound, 2)                     \
   V(MathSin, 2)                       \
+  V(MathTan, 2)                       \
   V(MathSqrt, 2)                      \
   V(MathTrunc, 2)                     \
   V(ObjectHasOwnProperty, 2)          \
   V(ArrayIsArray, 2)                  \
   V(StringFromCharCode, 2)            \
   V(StringPrototypeCharAt, 2)         \
   V(StringPrototypeCharCodeAt, 2)     \
   V(TypedArrayPrototypeByteLength, 1) \
   V(TypedArrayPrototypeByteOffset, 1) \
   V(TypedArrayPrototypeLength, 1)     \
@@ skipping 322 matching lines @@
   // ES6 section 20.2.2.25 Math.min ( value1, value2 , ...values )
   static void Generate_MathMin(MacroAssembler* masm) {
     Generate_MathMaxMin(masm, MathMaxMinKind::kMin);
   }
   // ES6 section 20.2.2.28 Math.round ( x )
   static void Generate_MathRound(CodeStubAssembler* assembler);
   // ES6 section 20.2.2.20 Math.sin ( x )
   static void Generate_MathSin(CodeStubAssembler* assembler);
   // ES6 section 20.2.2.32 Math.sqrt ( x )
   static void Generate_MathSqrt(CodeStubAssembler* assembler);
+  // ES6 section 20.2.2.33 Math.sin ( x )
+  static void Generate_MathTan(CodeStubAssembler* assembler);
   // ES6 section 20.2.2.35 Math.trunc ( x )
   static void Generate_MathTrunc(CodeStubAssembler* assembler);
 
   // ES6 section 20.1.1.1 Number ( [ value ] ) for the [[Call]] case.
   static void Generate_NumberConstructor(MacroAssembler* masm);
   // ES6 section 20.1.1.1 Number ( [ value ] ) for the [[Construct]] case.
   static void Generate_NumberConstructor_ConstructStub(MacroAssembler* masm);
 
   // ES6 section 19.2.3.6 Function.prototype [ @@hasInstance ] ( V )
   static void Generate_FunctionPrototypeHasInstance(
@@ skipping 71 matching lines @@
   friend class BuiltinFunctionTable;
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_H_