fix: add _USE_MATH_DEFINES for M_PI on Windows #6
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Summary
Fix Windows build failure caused by undefined
M_PIconstant in MSVC.Root Cause
MSVC doesn't define
M_PIby default when including<cmath>. The macro_USE_MATH_DEFINESmust be defined before including<cmath>to enable math constants.Changes
Added
_USE_MATH_DEFINESdefinition for Windows builds in:src/audio/audio_processor.cpptests/utils/test_signal_generator.htests/fixtures/audio_test_fixture.htests/unit/test_rnnoise_processor.cpptests/unit/test_audio_converter.cppTest Plan