circuitpython/tests/perf_bench/misc_mandel.py
Damien George 73c269414f tests/perf_bench: Add some miscellaneous performance benchmarks.
misc_aes.py and misc_mandel.py are adapted from sources in this repository.
misc_pystone.py is the standard Python pystone test.  misc_raytrace.py is
written from scratch.
2019-06-28 16:29:23 +10:00

32 lines
723 B
Python

# Compute the Mandelbrot set, to test complex numbers
def mandelbrot(w, h):
def in_set(c):
z = 0
for i in range(32):
z = z * z + c
if abs(z) > 100:
return i
return 0
img = bytearray(w * h)
xscale = ((w - 1) / 2.4)
yscale = ((h - 1) / 3.2)
for v in range(h):
line = memoryview(img)[v * w:v * w + w]
for u in range(w):
c = in_set(complex(v / yscale - 2.3, u / xscale - 1.2))
line[u] = c
return img
bm_params = {
(100, 100): (20, 20),
(1000, 1000): (80, 80),
(5000, 1000): (150, 150),
}
def bm_setup(ps):
return lambda: mandelbrot(ps[0], ps[1]), lambda: (ps[0] * ps[1], None)