forked from Lephenixnoir/PythonExtra
52 lines
1.3 KiB
Python
52 lines
1.3 KiB
Python
# test 8/16/32/64 bit signed/unsigned integer arguments and return types for ffi functions
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# requires ffi_lib.c to be compiled as: $(CC) -shared -o ffi_lib.so ffi_lib.c
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import uos, usys
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try:
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import ffi
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except ImportError:
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print("SKIP")
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raise SystemExit
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ffi_lib_filename = "./" + usys.argv[0].rsplit("/", 1)[0] + "/ffi_lib.so"
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try:
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uos.stat(ffi_lib_filename)
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except OSError:
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print("SKIP")
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raise SystemExit
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ffi_lib = ffi.open(ffi_lib_filename)
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f8i = ffi_lib.func("b", "f8i", "b")
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f8u = ffi_lib.func("B", "f8u", "B")
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f16i = ffi_lib.func("h", "f16i", "h")
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f16u = ffi_lib.func("H", "f16u", "H")
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f32i = ffi_lib.func("i", "f32i", "i")
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f32u = ffi_lib.func("I", "f32u", "I")
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f64i = ffi_lib.func("q", "f64i", "q")
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f64u = ffi_lib.func("Q", "f64u", "Q")
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for func_name in ("f8i", "f8u", "f16i", "f16u", "f32i", "f32u", "f64i", "f64u"):
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func = globals()[func_name]
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for val in (
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0,
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0x7F,
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0x80,
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0xFF,
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0x100,
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0x7FFF,
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0x8000,
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0xFFFF,
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0x10000,
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0x7FFFFFFF,
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0x80000000,
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0xFFFFFFFF,
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0x100000000,
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0x7FFF_FFFF_FFFF_FFFF,
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0x8000_0000_0000_0000,
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0xFFFF_FFFF_FFFF_FFFF,
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0x1_0000_0000_0000_0000,
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):
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print("{}({:x}) = {:x}".format(func_name, val, func(val)))
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