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strconv: update ftoa comment for 'E' and 'G'

Inspired by 3827042.

R=gri, peterGo
CC=golang-dev
https://golang.org/cl/3858042
This commit is contained in:
Russ Cox 2011-01-04 13:13:12 -05:00
parent 2aa75f702c
commit 71793d4b42

View File

@ -42,13 +42,15 @@ var FloatSize = floatsize()
// The format fmt is one of
// 'b' (-ddddp±ddd, a binary exponent),
// 'e' (-d.dddde±dd, a decimal exponent),
// 'f' (-ddd.dddd, no exponent), or
// 'g' ('e' for large exponents, 'f' otherwise).
// 'E' (-d.ddddE±dd, a decimal exponent),
// 'f' (-ddd.dddd, no exponent),
// 'g' ('e' for large exponents, 'f' otherwise), or
// 'G' ('E' for large exponents, 'f' otherwise).
//
// The precision prec controls the number of digits
// (excluding the exponent) printed by the 'e', 'f', and 'g' formats.
// For 'e' and 'f' it is the number of digits after the decimal point.
// For 'g' it is the total number of digits.
// (excluding the exponent) printed by the 'e', 'E', 'f', 'g', and 'G' formats.
// For 'e', 'E', and 'f' it is the number of digits after the decimal point.
// For 'g' and 'G' it is the total number of digits.
// The special precision -1 uses the smallest number of digits
// necessary such that Atof32 will return f exactly.
//