gh-138573: restrict testAtan2() the IEC 60559-compatible platforms #138812
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This value indicating support the IEC 60559 floating-point standard (the Annex F of C99). If enabled, the float type characteristics matches the IEC 60559 double format and exceptional cases for the math's functions follow to the section F.10 of the C99 standard.
Section 7.12.4.4 of the C17 doesn't specify special values for atan2() (and in particular permit domain error when both arguments are zero). The F.10.1.4 does.
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This is on top of #138811 (hence a draft). |
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Section 7.12.4.4 of the C17 doesn't specify special values for atan2() (and in particular permit domain error when both arguments are zero). The F.10.1.4 does.
test.test_math.MathTests.testAtan2failure on OpenIndiana/Solaris #138573📚 Documentation preview 📚: https://cpython-previews--138812.org.readthedocs.build/