Added Atan{,32}, Cos{,32}, Sin{,32}, Tan{,32}.

math.go

@@ -12,6 +12,26 @@ func Abs32(f float32) float32 {
 	return float32(Abs(float64(f)))
 }
 
+// Atan returns the arctangent of f.
+func Atan(f float64) float64 {
+	return math.Atan(f)
+}
+
+// Atan32 returns the arctangent of f.
+func Atan32(f float32) float32 {
+	return float32(math.Atan(float64(f)))
+}
+
+// Cos returns the cosine of f.
+func Cos(f float64) float64 {
+	return math.Cos(f)
+}
+
+// Cos32 returns the cosine of f.
+func Cos32(f float32) float32 {
+	return float32(math.Cos(float64(f)))
+}
+
 // IsNaN checks if the floating point number is not a number.
 func IsNaN(f float64) bool {
 	return f != f
@@ -62,6 +82,16 @@ func Round32(f float32) float32 {
 	return float32(math.Round(float64(f)))
 }
 
+// Sin returns the sine of f.
+func Sin(f float64) float64 {
+	return math.Sin(f)
+}
+
+// Sin32 returns the sine of f.
+func Sin32(f float32) float32 {
+	return float32(math.Sin(float64(f)))
+}
+
 // Sq returns the squared value of f.
 func Sq(f float64) float64 {
 	return f * f
@@ -81,3 +111,13 @@ func Sqrt(f float64) float64 {
 func Sqrt32(f float32) float32 {
 	return float32(Sqrt(float64(f)))
 }
+
+// Tan returns the tangent of f.
+func Tan(f float64) float64 {
+	return math.Tan(f)
+}
+
+// Tan32 returns the tangent of f.
+func Tan32(f float32) float32 {
+	return float32(math.Tan(float64(f)))
+}