const math/big.ToZero

4 uses

	math/big (current package)
		float.go#L138: 	ToZero                            // == IEEE 754-2008 roundTowardZero
		float.go#L462: 		case ToZero:
		roundingmode_string.go#L13: 	_ = x[ToZero-2]

	github.com/go-faster/jx
		dec_float_big.go#L20: 	val, _, err := big.ParseFloat(string(str), 10, uint(prec), big.ToZero)