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Merge pull request #22 from nineties/make-python-faster

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Make python faster
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Koichi NAKAMURA 2021-12-07 02:20:43 +09:00 committed by GitHub
commit 32baf5e2d1
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1 changed files with 4 additions and 2 deletions
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others/planck.py
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@ -19,6 +19,7 @@ MEMORY_SIZE = 0x10000
memory = array.array('i', [0]*MEMORY_SIZE) memory = array.array('i', [0]*MEMORY_SIZE)
CELL = memory.itemsize CELL = memory.itemsize
CELLm1 = CELL - 1
CELL_SHIFT = CELL.bit_length() - 1 CELL_SHIFT = CELL.bit_length() - 1
STACK_SIZE = 0x100 STACK_SIZE = 0x100
@ -32,8 +33,9 @@ rp = (MEMORY_SIZE - STACK_SIZE) * CELL
ip = 0 ip = 0
np = 0 np = 0
ALIGN_MASK = ~(CELL - 1)
def aligned(n): def aligned(n):
return (n + CELL - 1) & ~(CELL - 1) return (n + CELLm1) & ALIGN_MASK
def align(): def align():
write(HERE_CELL, aligned(read(HERE_CELL))) write(HERE_CELL, aligned(read(HERE_CELL)))
@ -57,7 +59,7 @@ def read_byte(addr):
def write_byte(addr, c): def write_byte(addr, c):
i = addr >> CELL_SHIFT i = addr >> CELL_SHIFT
m = (addr % CELL)*8 m = (addr % CELL) * 8
v = memory[i] v = memory[i]
memory[i] = (v & ~(0xff << m)) | (c&0xff) << m memory[i] = (v & ~(0xff << m)) | (c&0xff) << m