Added more math consts (#404)

docs/stdlib-math.md

@@ -18,6 +18,28 @@ math := import("math")
 - `ln10`
 - `ln10E`
 
+Mathematical constants.
+
+- `maxFloat32`
+- `smallestNonzeroFloat32`
+- `maxFloat64`
+- `smallestNonzeroFloat64`
+
+Floating-point limit values. Max is the largest finite value representable by the type. SmallestNonzero is the smallest positive, non-zero value representable by the type.
+
+- `maxInt`
+- `minInt`
+- `maxInt8`
+- `minInt8`
+- `maxInt16`
+- `minInt16`
+- `maxInt32`
+- `minInt32`
+- `maxInt64`
+- `minInt64`
+
+Integer limit values.
+
 ## Functions
 
 - `abs(x float) => float`: returns the absolute value of x.

stdlib/math.go

@@ -7,17 +7,31 @@ import (
 )
 
 var mathModule = map[string]tengo.Object{
-	"e":       &tengo.Float{Value: math.E},
+	"e":                      &tengo.Float{Value: math.E},
-	"pi":      &tengo.Float{Value: math.Pi},
+	"pi":                     &tengo.Float{Value: math.Pi},
-	"phi":     &tengo.Float{Value: math.Phi},
+	"phi":                    &tengo.Float{Value: math.Phi},
-	"sqrt2":   &tengo.Float{Value: math.Sqrt2},
+	"sqrt2":                  &tengo.Float{Value: math.Sqrt2},
-	"sqrtE":   &tengo.Float{Value: math.SqrtE},
+	"sqrtE":                  &tengo.Float{Value: math.SqrtE},
-	"sqrtPi":  &tengo.Float{Value: math.SqrtPi},
+	"sqrtPi":                 &tengo.Float{Value: math.SqrtPi},
-	"sqrtPhi": &tengo.Float{Value: math.SqrtPhi},
+	"sqrtPhi":                &tengo.Float{Value: math.SqrtPhi},
-	"ln2":     &tengo.Float{Value: math.Ln2},
+	"ln2":                    &tengo.Float{Value: math.Ln2},
-	"log2E":   &tengo.Float{Value: math.Log2E},
+	"log2E":                  &tengo.Float{Value: math.Log2E},
-	"ln10":    &tengo.Float{Value: math.Ln10},
+	"ln10":                   &tengo.Float{Value: math.Ln10},
-	"log10E":  &tengo.Float{Value: math.Log10E},
+	"log10E":                 &tengo.Float{Value: math.Log10E},
+	"maxFloat32":             &tengo.Float{Value: math.MaxFloat32},
+	"smallestNonzeroFloat32": &tengo.Float{Value: math.SmallestNonzeroFloat32},
+	"maxFloat64":             &tengo.Float{Value: math.MaxFloat64},
+	"smallestNonzeroFloat64": &tengo.Float{Value: math.SmallestNonzeroFloat64},
+	"maxInt":                 &tengo.Int{Value: math.MaxInt},
+	"minInt":                 &tengo.Int{Value: math.MinInt},
+	"maxInt8":                &tengo.Int{Value: math.MaxInt8},
+	"minInt8":                &tengo.Int{Value: math.MinInt8},
+	"maxInt16":               &tengo.Int{Value: math.MaxInt16},
+	"minInt16":               &tengo.Int{Value: math.MinInt16},
+	"maxInt32":               &tengo.Int{Value: math.MaxInt32},
+	"minInt32":               &tengo.Int{Value: math.MinInt32},
+	"maxInt64":               &tengo.Int{Value: math.MaxInt64},
+	"minInt64":               &tengo.Int{Value: math.MinInt64},
 	"abs": &tengo.UserFunction{
 		Name:  "abs",
 		Value: FuncAFRF(math.Abs),