func math/big.scanSign

4 uses

	math/big (current package)
		floatconv.go#L43: 	z.neg, err = scanSign(r)
		intconv.go#L184: 	neg, err := scanSign(r)
		intconv.go#L199: func scanSign(r io.ByteScanner) (neg bool, err error) {
		ratconv.go#L87: 	neg, err := scanSign(r)