math: s/MinFloat/SmallestNonzeroFloat/

R=r, gri
CC=golang-dev
https://golang.org/cl/3547042

src/pkg/math/all_test.go

@@ -2263,9 +2263,9 @@ type floatTest struct {
 
 var floatTests = []floatTest{
 	{float64(MaxFloat64), "MaxFloat64", "1.7976931348623157e+308"},
-	{float64(MinFloat64), "MinFloat64", "5e-324"},
+	{float64(SmallestNonzeroFloat64), "SmallestNonzeroFloat64", "5e-324"},
 	{float32(MaxFloat32), "MaxFloat32", "3.4028235e+38"},
-	{float32(MinFloat32), "MinFloat32", "1e-45"},
+	{float32(SmallestNonzeroFloat32), "SmallestNonzeroFloat32", "1e-45"},
 }
 
 func TestFloatMinMax(t *testing.T) {

src/pkg/math/const.go

@@ -25,13 +25,13 @@ const (
 
 // Floating-point limit values.
 // Max is the largest finite value representable by the type.
-// Min is the smallest nonzero value representable by the type.
+// SmallestNonzero is the smallest positive, non-zero value representable by the type.
 const (
 	MaxFloat32             = 3.40282346638528859811704183484516925440e+38  /* 2**127 * (2**24 - 1) / 2**23 */
-	MinFloat32 = 1.401298464324817070923729583289916131280e-45 /* 1 / 2**(127 - 1 + 23) */
+	SmallestNonzeroFloat32 = 1.401298464324817070923729583289916131280e-45 /* 1 / 2**(127 - 1 + 23) */
 
 	MaxFloat64             = 1.797693134862315708145274237317043567981e+308 /* 2**1023 * (2**53 - 1) / 2**52 */
-	MinFloat64 = 4.940656458412465441765687928682213723651e-324 /* 1 / 2**(1023 - 1 + 52) */
+	SmallestNonzeroFloat64 = 4.940656458412465441765687928682213723651e-324 /* 1 / 2**(1023 - 1 + 52) */
 )
 
 // Integer limit values.