def test_from_twos_complement(self):
self.assertEqual(
-1, bit_helpers.from_twos_complement(value=0xf, bit_count=4))
self.assertEqual(
-1, bit_helpers.from_twos_complement(value=0x1f, bit_count=5))
self.assertEqual(
-2, bit_helpers.from_twos_complement(value=0x1e, bit_count=5))
self.assertEqual(
15, bit_helpers.from_twos_complement(value=0xf, bit_count=5))
def bits_to_int(jit_bits: ir_bits.Bits, signed: bool) -> int:
"""Constructs the ir bits value by reading in a 64-bit value at a time."""
assert isinstance(jit_bits, ir_bits.Bits), jit_bits
bit_count = jit_bits.bit_count()
bits_value = jit_bits.to_uint()
return (bits_value if not signed else bit_helpers.from_twos_complement(
bits_value, bit_count))
def bits_to_int(jit_bits: ir_bits.Bits, signed: bool) -> int:
"""Constructs the ir bits value by reading in a 64-bit value at a time."""
bit_count = jit_bits.bit_count()
bits_value = 0
word_number = 0
while (word_number * 64) < bit_count:
word_value = jit_bits.word_to_uint(word_number)
bits_value = (word_value << (word_number * WORD_SIZE)) | bits_value
word_number += 1
return (bits_value if not signed else bit_helpers.from_twos_complement(
bits_value, bit_count))
def from_twos_complement(self) -> int:
return bit_helpers.from_twos_complement(
value=self.value, bit_count=self.bit_count)