working on number type

src/number.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"fmt"
+	"math/big"
+)
+
+// a number type
+type number = *big.Rat
+
+// create a number from two integers
+var createNumber = big.NewRat
+
+// create a new number type
+func newNumber() *big.Rat {
+	return new(big.Rat)
+}
+
+// converts a string into a number
+func stringToNumber(str string) (*big.Rat, bool) {
+	return newNumber().SetString(str)
+}
+
+// converts a number type to a string
+func numberToString(num number, fraction bool) string {
+	if fraction {
+		return num.RatString()
+	}
+	x, _ := num.Float64()
+	return fmt.Sprint(x)
+}