Merge pull request #3 from EngoEngine/sin-and-sqrt-for-js

added compatibility with wasm / gopherjs

Author: Noofbiz

sin.go

@@ -5,6 +5,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build !js
+
 package math
 
 /*

sin_386.s

@@ -5,6 +5,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build !js
+
 #include "textflag.h"
 
 // func Cos(x float32) float32
@@ -48,4 +50,3 @@ TEXT ·Sin(SB),NOSPLIT,$0
   FSIN                 // F0=sin(reduced_x)
   FMOVFP  F0, ret+4(FP)
   RET
-

sin_amd64.s

@@ -5,6 +5,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build !js
+
 #include "textflag.h"
 
 TEXT ·Sin(SB),NOSPLIT,$0

sin_js.go

@@ -0,0 +1,15 @@
+// +build js
+
+package math
+
+import (
+	stdmath "math"
+)
+
+func Cos(x float32) float32 {
+	return float32(stdmath.Cos(float64(x)))
+}
+
+func Sin(x float32) float32 {
+	return float32(stdmath.Cos(float64(x)))
+}

sqrt.go

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build !js
+
 package math
 
 // The original C code and the long comment below are

sqrt_386.s

@@ -2,9 +2,11 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build !js
+
 #include "textflag.h"
 
-// func Sqrt(x float32) float32	
+// func Sqrt(x float32) float32
 TEXT ·Sqrt(SB),NOSPLIT,$0
 	SQRTSS x+0(FP), X0
 	MOVSS X0, ret+4(FP)

sqrt_amd64.s

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build !js
+
 #include "textflag.h"
 
 // func Sqrt(x float32) float32

sqrt_js.go

@@ -0,0 +1,11 @@
+// +build js
+
+package math
+
+import (
+	stdmath "math"
+)
+
+func Sqrt(x float32) float32 {
+	return float32(stdmath.Sqrt(float64(x)))
+}

stubs_arm.s

@@ -3,17 +3,18 @@
 // license that can be found in the LICENSE file.
 
 // +build arm
+// +build !js
 
 #include "textflag.h"
 
-// func Sqrt(x float32) float32	
+// func Sqrt(x float32) float32
 TEXT ·Sqrt(SB),NOSPLIT,$0
 	JMP ·sqrt(SB)
 
-// func Cos(x float32) float32	
+// func Cos(x float32) float32
 TEXT ·Cos(SB),NOSPLIT,$0
 	JMP ·cos(SB)
 
-// func Sin(x float32) float32	
+// func Sin(x float32) float32
 TEXT ·Sin(SB),NOSPLIT,$0
 	JMP ·sin(SB)

stubs_arm64.s

@@ -3,17 +3,18 @@
 // license that can be found in the LICENSE file.
 
 // +build arm64
+// +build !js
 
 #include "textflag.h"
 
-// func Sqrt(x float32) float32	
+// func Sqrt(x float32) float32
 TEXT ·Sqrt(SB),NOSPLIT,$0
 	JMP ·sqrt(SB)
 
-// func Cos(x float32) float32	
+// func Cos(x float32) float32
 TEXT ·Cos(SB),NOSPLIT,$0
 	JMP ·cos(SB)
 
-// func Sin(x float32) float32	
+// func Sin(x float32) float32
 TEXT ·Sin(SB),NOSPLIT,$0
 	JMP ·sin(SB)

stubs_ppc64x.s

@@ -3,9 +3,10 @@
 // license that can be found in the LICENSE file.
 
 // +build ppc64 ppc64le
+// +build !js
 
 #include "textflag.h"
 
-// func Sqrt(x float32) float32	
+// func Sqrt(x float32) float32
 TEXT ·Sqrt(SB),NOSPLIT,$0
 	JMP ·sqrt(SB)