forked from Lephenixnoir/PythonExtra
50 lines
1.2 KiB
Python
50 lines
1.2 KiB
Python
# test ffi float support
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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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def ffi_open(names):
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err = None
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for n in names:
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try:
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mod = ffi.open(n)
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return mod
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except OSError as e:
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err = e
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raise err
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libc = ffi_open(("libc.so", "libc.so.0", "libc.so.6", "libc.dylib"))
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try:
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strtof = libc.func("f", "strtof", "sp")
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except OSError:
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# Some libc's (e.g. Android's Bionic) define strtof as macro/inline func
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# in terms of strtod().
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print("SKIP")
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raise SystemExit
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print("%.6f" % strtof("1.23", None))
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strtod = libc.func("d", "strtod", "sp")
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print("%.6f" % strtod("1.23", None))
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# test passing double and float args
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libm = ffi_open(("libm.so", "libm.so.6", "libc.so.0", "libc.so.6", "libc.dylib"))
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tgamma = libm.func("d", "tgamma", "d")
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for fun_name in ("tgamma",):
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fun = globals()[fun_name]
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for val in (0.5, 1, 1.0, 1.5, 4, 4.0):
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print(fun_name, "%.5f" % fun(val))
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# test passing 2x float/double args
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powf = libm.func("f", "powf", "ff")
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pow = libm.func("d", "pow", "dd")
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for fun_name in ("powf", "pow"):
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fun = globals()[fun_name]
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for args in ((0, 1), (1, 0), (2, 0.5), (3, 4)):
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print(fun_name, "%.5f" % fun(*args))
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