Add support for special float values (inf and nan) (#210)

parser_test.go

@@ -2,6 +2,7 @@ package toml
 
 import (
 	"fmt"
+	"math"
 	"reflect"
 	"testing"
 	"time"
@@ -93,6 +94,25 @@ func TestSimpleNumbers(t *testing.T) {
 	})
 }
 
+func TestSpecialFloats(t *testing.T) {
+	tree, err := Load(`
+normalinf = inf
+plusinf = +inf
+minusinf = -inf
+normalnan = nan
+plusnan = +nan
+minusnan = -nan
+`)
+	assertTree(t, tree, err, map[string]interface{}{
+		"normalinf": math.Inf(1),
+		"plusinf":   math.Inf(1),
+		"minusinf":  math.Inf(-1),
+		"normalnan": math.NaN(),
+		"plusnan":   math.NaN(),
+		"minusnan":  math.NaN(),
+	})
+}
+
 func TestHexIntegers(t *testing.T) {
 	tree, err := Load(`a = 0xDEADBEEF`)
 	assertTree(t, tree, err, map[string]interface{}{"a": int64(3735928559)})