name  string
		input []byte
	}{
		{"Valid", []byte("typical")},
		{"InvalidASCII", []byte("foo\xffbar")},
		{"InvalidNonASCII", []byte("日本語\xff日本語")},
	}
	replacement := []byte("\uFFFD")
	b.ResetTimer()
	for _, test := range tests {
		b.Run(test.name, func(b *testing.B) {
			for i := 0; i < b.N; i++ {
				ToValidUTF8(test.input, replacement)
			}
		})
	}
}

:= makeBenchmarkValue() y := makeBenchmarkValue() m := makeBenchmarkModulus() b.ResetTimer() for i := 0; i < b.N; i++ { x.Add(y, m) } } func BenchmarkModSub(b *testing.B) { x := makeBenchmarkValue() y := makeBenchmarkValue() m := makeBenchmarkModulus() b.ResetTimer() for i := 0; i < b.N; i++ { x.Sub(y, m) } } func BenchmarkMontgomeryR(b *testing.B) { x := makeBenchmarkValue() m := makeBenchmarkModulus() b.ResetTimer() for i := 0; i < b.N; i++ { x.montgomeryRepresenta(m) } } func BenchmarkMontgomeryM(b...