func internal/strconv.fmtX

2 uses

	internal/strconv (current package)
		ftoa.go#L121: 		return fmtX(dst, prec, fmt, neg, mant, exp, flt)
		ftoa.go#L516: func fmtX(dst []byte, prec int, fmt byte, neg bool, mant uint64, exp int, flt *floatInfo) []byte {