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package ChiselTests
import Chisel._
class UIntOps extends Module {
val io = new Bundle {
val a = UInt(INPUT, 16)
val b = UInt(INPUT, 16)
val addout = UInt(OUTPUT, 16)
val subout = UInt(OUTPUT, 16)
val timesout = UInt(OUTPUT, 16)
val divout = UInt(OUTPUT, 16)
val modout = UInt(OUTPUT, 16)
val lshiftout = UInt(OUTPUT, 16)
val rshiftout = UInt(OUTPUT, 16)
val lessout = Bool(OUTPUT)
val greatout = Bool(OUTPUT)
val eqout = Bool(OUTPUT)
val noteqout = Bool(OUTPUT)
val lesseqout = Bool(OUTPUT)
val greateqout = Bool(OUTPUT)
}
val a = io.a
val b = io.b
io.addout := a +% b
io.subout := a -% b
io.timesout := (a * b)(15, 0)
io.divout := a / Mux(b === UInt(0), UInt(1), b)
// io.modout := a % b
// TODO:
io.modout := UInt(0)
io.lshiftout := (a << b(3, 0))(15, 0)
io.rshiftout := a >> b
io.lessout := a < b
io.greatout := a > b
io.eqout := a === b
io.noteqout := (a != b)
io.lesseqout := a <= b
io.greateqout := a >= b
}
class UIntOpsTester(c: UIntOps) extends Tester(c) {
def uintExpect(d: Bits, x: BigInt) {
val mask = (1 << 16) - 1
println(" E = " + x + " X&M = " + (x & mask))
expect(d, x & mask)
}
for (t <- 0 until 16) {
val test_a = rnd.nextInt(1 << 16)
val test_b = rnd.nextInt(1 << 16)
println("A = " + test_a + " B = " + test_b)
poke(c.io.a, test_a)
poke(c.io.b, test_b)
step(1)
uintExpect(c.io.addout, test_a + test_b)
uintExpect(c.io.subout, test_a - test_b)
uintExpect(c.io.divout, if (test_b == 0) 0 else test_a / test_b)
uintExpect(c.io.timesout, test_a * test_b)
// uintExpect(c.io.modout, test_a % test_b)
uintExpect(c.io.lshiftout, test_a << (test_b&15))
uintExpect(c.io.rshiftout, test_a >> test_b)
expect(c.io.lessout, int(test_a < test_b))
expect(c.io.greatout, int(test_a > test_b))
expect(c.io.eqout, int(test_a == test_b))
expect(c.io.noteqout, int(test_a != test_b))
expect(c.io.lessout, int(test_a <= test_b))
expect(c.io.greateqout, int(test_a >= test_b))
}
}
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