Integer overflow: Difference between revisions
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DS 0F alignment |
DS 0F alignment |
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BITFPO DC BL1'00001000' bit20=1 [start at 16]</lang> |
BITFPO DC BL1'00001000' bit20=1 [start at 16]</lang> |
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=={{header|6502 Assembly}}== |
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Signed overflow (crossing the 7F-80 boundary) is detected by the CPU setting the overflow flag. |
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Unsigned overflow from 255 to 0 is detected by setting the carry flag. |
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In either case, if the programmer expects either to occur, a branch can be taken depending on the status of the flag after a calculation where overflow could cause a problem. |
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=={{header|Ada}}== |
=={{header|Ada}}== |
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