Prevent potential overflow #41
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Cast a 64 bit integer into 32 bit might cause overflow. When the *a is larger than *b and 31th bit of (*a - *b) is 1, casting it to an 32 bit integer will yeild a negative number, which is an unexpected result.
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Thanks! You're right, nasty cast! Appreciated 👍 |
oreparaz
approved these changes
Mar 19, 2024
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Cast a 64 bit integer into 32 bit might cause overflow. When the *a is larger than *b and the 31th bit of (*a - *b) is 1, casting it to an 32 bit integer will yeild a negative number, which is an unexpected result.