code review 5434095: strconv: new API

src/pkg/strconv/atof.go

 // Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Package strconv implements conversions to and from string representations
 // of basic data types.
 package strconv
 
 // decimal to binary floating point conversion.
 // Algorithm:
@@ skipping 386 matching lines @@
 // If s is not syntactically well-formed, ParseFloat returns err.Error = ErrSyntax.
 //
 // If s is syntactically well-formed but is more than 1/2 ULP
 // away from the largest floating point number of the given size,
 // ParseFloat returns f = ±Inf, err.Error = ErrRange.
 func ParseFloat(s string, bitSize int) (f float64, err error) {
         if bitSize == 32 {
                 f1, err1 := atof32(s)
                 return float64(f1), err1
         }
-        f1, err1 := atof64(s)
-        return f1, err1
-}
+        return atof64(s)
+}