math.v: Added more functions

Added almost all the functions present in C math lib

math/math.v

@@ -15,10 +15,34 @@ fn abs(a f64) f64 {
 	return a
 }
 
+fn ceil(a f64) f64 {
+	return C.ceil(a)
+}
+
 fn cos(a f64) f64 {
 	return C.cos(a)
 }
 
+fn cosh(a f64) f64 {
+	return C.cosh(a)
+}
+
+fn exp(a f64) f64 {
+	return C.exp(a)
+}
+
+fn floor(a f64) f64 {
+	return C.floor(a)
+}
+
+fn log(a f64) f64 {
+	return C.log(a)
+}
+
+fn log10(a f64) f64 {
+	return C.log10(a)
+}
+
 fn max(a, b f64) f64 {
 	if a > b {
 		return a
@@ -49,7 +73,22 @@ fn sin(a f64) f64 {
 	return C.sin(a)
 }
 
+fn sinh(a f64) f64 {
+	return C.sinh(a)
+}
+
 fn sqrt(a f64) f64 {
 	return C.sqrt(a)
 }
 
+fn tan(a f64) f64 {
+	return C.tan(a)
+}
+
+fn tanh(a f64) f64 {
+	return C.tanh(a)
+}
+
+fn trunc(a f64) f64 {
+	return C.trunc(a)
+}