You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
77 lines
2.1 KiB
77 lines
2.1 KiB
public class IntShiftTests { |
|
|
|
private static int test_shl(int a, int b) { |
|
return a << b; |
|
} |
|
|
|
private static int test_shlc1(int a) { |
|
return a << 1; |
|
} |
|
|
|
private static int test_shlc33(int a) { |
|
return a << 33; |
|
} |
|
|
|
private static int test_shr(int a, int b) { |
|
return a >> b; |
|
} |
|
|
|
private static int test_shrc1(int a) { |
|
return a >> 1; |
|
} |
|
|
|
private static int test_shrc33(int a) { |
|
return a >> 33; |
|
} |
|
|
|
private static int test_ushr(int a, int b) { |
|
return a >>> b; |
|
} |
|
|
|
private static int test_ushrc1(int a) { |
|
return a >>> 1; |
|
} |
|
|
|
private static int test_ushrc33(int a) { |
|
return a >>> 33; |
|
} |
|
|
|
private static void assertThat(boolean assertion) { |
|
if (! assertion) { |
|
throw new AssertionError(); |
|
} |
|
} |
|
|
|
public static void main(String[] args) { |
|
|
|
assertThat(test_shl(32, 2) == 128); |
|
assertThat(test_shl(0x80000000, 1) == 0); |
|
assertThat(test_shl(0x40000000, 1) == 0x80000000); |
|
assertThat(test_shl(0x40000000, 33) == 0x80000000); |
|
|
|
assertThat(test_shr(32, 2) == 8); |
|
assertThat(test_shr(1, 1) == 0); |
|
assertThat(test_shr(0x80000000, 1) == 0xc0000000); |
|
assertThat(test_shr(0x40000000, 33) == 0x20000000); |
|
|
|
assertThat(test_ushr(32, 2) == 8); |
|
assertThat(test_ushr(1, 1) == 0); |
|
assertThat(test_ushr(0x80000000, 1) == 0x40000000); |
|
assertThat(test_ushr(0x40000000, 33) == 0x20000000); |
|
|
|
assertThat(test_shlc1(32) == 64); |
|
assertThat(test_shlc1(0x80000000) == 0); |
|
assertThat(test_shlc1(0x40000000) == 0x80000000); |
|
assertThat(test_shlc33(0x40000000) == 0x80000000); |
|
|
|
assertThat(test_shrc1(32) == 16); |
|
assertThat(test_shrc1(1) == 0); |
|
assertThat(test_shrc1(0x80000000) == 0xc0000000); |
|
assertThat(test_shrc33(0x40000000) == 0x20000000); |
|
|
|
assertThat(test_ushrc1(32) == 16); |
|
assertThat(test_ushrc1(1) == 0); |
|
assertThat(test_ushrc1(0x80000000) == 0x40000000); |
|
assertThat(test_ushrc33(0x40000000) == 0x20000000); |
|
} |
|
}
|
|
|