e57aa7e70a
CPython math.nan is positive with regards to copysign. The signaling bit (aka sign flag) was incorrectly set. In addition, REPR_C and REPR_D should only use the _true_ nan to prevent system crash in case of hand-crafted floats. For instance, with REPR_C, any nan-like float following the pattern `01111111 1xxxxxxx xxxxxxxx xxxxx1xx` would be switched to an immediate object or a qstr string. When the qstr index is too large, this would cause a crash. This commit fixes the issue, and adds the relevant test cases. Signed-off-by: Yoctopuce dev <dev@yoctopuce.com>
20 lines
480 B
Python
20 lines
480 B
Python
# Tests constants of the math module available only with MICROPY_PY_MATH_CONSTANTS.
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try:
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import math
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from math import isnan
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math.tau
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except (ImportError, AttributeError):
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print("SKIP")
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raise SystemExit
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print(math.tau == 2.0 * math.pi)
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print(math.copysign(1.0, math.tau))
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print(math.inf == float("inf"))
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print(-math.inf == -float("inf"))
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print(math.copysign(1.0, math.inf))
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print(isnan(math.nan))
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print(isnan(-math.nan))
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print(math.copysign(1.0, math.nan))
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