BitVecShiftRight
- Function
- April 17, 2026
Table of Contents
BitVecShiftRight
BitVecShiftRightDescription
Shift all bits in bitvector to the right by specified positions. New bits on the left are filled with zeros.
Parameters
| Name | Direction | Description |
|---|---|---|
bv | in | Bitvector to shift |
positions | in | Number of positions to shift right |
Usage example (from documentation)
BitVecShiftRight(&flags, 2);
Usage example (Cross-references)
- In
BitVec.c:889:
}
void BitVecShiftRight(BitVec *bv, u64 positions) {
ValidateBitVec(bv);
if (positions == 0 || bv->length == 0) {
// Test NULL pointer for shift right - should abort
BitVecShiftRight(NULL, 5);
return false;
// Test BitVecShiftRight function - CORRECTED EXPECTATIONS
bool test_bitvec_shift_right(void) {
WriteFmt("Testing BitVecShiftRight\n");
BitVec bv = BitVecInit();
// New bit[3] = 0 (filled)
// Expected result: 1100
BitVecShiftRight(&bv, 2);
bool test_result = (bv.length == 4);
result = result && (bv.length == 0);
BitVecShiftRight(&bv, 3);
result = result && (bv.length == 0);
// Shift left by 1, then right by 1 - should NOT restore original (data loss)
BitVecShiftLeft(&bv, 1);
BitVecShiftRight(&bv, 1);
// Should be different from original (lost MSB, gained LSB zero)
}
BitVecShiftRight(&bv, 10);
result = result && (bv.length == 0);
// Test BitVecShiftRight function - CORRECTED EXPECTATIONS
bool test_bitvec_shift_right(void) {
WriteFmtLn("Testing BitVecShiftRight");
BitVec bv = BitVecInit();
// New bit[3] = 0 (filled)
// Expected result: 1100
BitVecShiftRight(&bv, 2);
bool test_result = (bv.length == 4);
result = result && (bv.length == 0);
BitVecShiftRight(&bv, 3);
result = result && (bv.length == 0);
// Shift left by 1, then right by 1 - should NOT restore original (data loss)
BitVecShiftLeft(&bv, 1);
BitVecShiftRight(&bv, 1);
// Should be different from original (lost MSB, gained LSB zero)
}
BitVecShiftRight(&bv, 10);
result = result && (bv.length == 0);
// Test NULL pointer for shift right - should abort
BitVecShiftRight(NULL, 5);
return false;