projects / vvhitespace / blame
| Commit | Line | Data |
|---|---|---|
| 8b4ce1c2 AT |
1 | @ Shift by zero. |
| 2 | SSSTN | PUSH +1 | |
| 3 | SSSSN | PUSH 0 | |
| 4 | NSTTSTTSSN | JSR > 101100 (rshift) | |
| 5 | NSTTSSTN | JSR > 1001 (print number from stack) | |
| 6 | ||
| 7 | @ Shift by one, positive sign extension. | |
| 8 | SSSTSN | PUSH +2 | |
| 9 | SSSTN | PUSH +1 | |
| 10 | NSTTSTTSSN | JSR > 101100 (rshift) | |
| 11 | NSTTSSTN | JSR > 1001 (print number from stack) | |
| 12 | ||
| 13 | @ Shift by four, positive sign extension. | |
| 14 | SSSTSSSSN | PUSH +16 | |
| 15 | SSSTSSN | PUSH +4 | |
| 16 | NSTTSTTSSN | JSR > 101100 (rshift) | |
| 17 | NSTTSSTN | JSR > 1001 (print number from stack) | |
| 18 | ||
| 19 | @ Shift by one, negative sign extension. | |
| 20 | @ -9223372036854775805 = 1000000000000000000000000000000000000000000000000000000000000011 | |
| 21 | @ -4611686018427387903 = 1100000000000000000000000000000000000000000000000000000000000001 | |
| 22 | SSTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTSTN | PUSH -9223372036854775805 | |
| 23 | SSSTN | PUSH +1 | |
| 24 | NSTTSTTSSN | JSR > 101100 (rshift) | |
| 25 | NSTTSSTN | JSR > 1001 (print number from stack) | |
| 26 | ||
| 27 | @ Shift by four, negative sign extension | |
| 28 | @ -9223372036854775638 = 1000000000000000000000000000000000000000000000000000000010101010 | |
| 29 | @ -576460752303423478 = 1111100000000000000000000000000000000000000000000000000000001010 | |
| 30 | SSTSTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTSTSTSTTSN | PUSH -9223372036854775638 | |
| 31 | SSSTSSN | PUSH +4 | |
| 32 | NSTTSTTSSN | JSR > 101100 (rshift) | |
| 33 | NSTTSSTN | JSR > 1001 (print number from stack) | |
| 34 | ||
| 35 | @ Test for special case: rshift(-1) = -1 | |
| 36 | SSTTN | PUSH -1 | |
| 37 | SSSTN | PUSH +1 | |
| 38 | NSTTSTTSSN | JSR > 101100 (rshift) | |
| 39 | NSTTSSTN | JSR > 1001 (print number from stack) | |
| 40 | ||
| 41 | @ Shift a single 1 in the MSb into all ones | |
| 42 | SSTTSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSN | PUSH -(2^63) | |
| 43 | SSSTTTTTTN | PUSH +63 | |
| 44 | NSTTSTTSSN | JSR > 101100 (rshift) | |
| 45 | NSTTSSTN | JSR > 1001 (print number from stack) | |
| 46 | ||
| 47 | @ All done. | |
| 48 | NNN | DIE | |
| 49 | ||
| 50 | #include <logic.pvvs> | |
| 51 | #include <stdio.pvvs> |