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Testing variable bit

Mike Collins

I'm having some problems testing bit 0 of a variable to see if it's a 1. Here's the snippet of the code:

if ((bWork && 0x01)==1)
       bTemp = bTemp|0x01;
else
       bTemp = bTemp & 0xFE;

The problem is that whenever bWork > 0 (such as when bWork = 0xFC), it drops into the if statement even though it should be zero and drop into the else statement.
I probably have a syntax error but don't see it.

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    && is logical and. & is bitwise and. The given snippet will take the if path whenever bWork is "true" (non-zero). (The other operand, "0x01", is always true, so it only depends on bWork.) You probably want:

    if ((bWork & 0x01) == 1)

    to test just bit 1 of bWork.

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    && is logical and. & is bitwise and. The given snippet will take the if path whenever bWork is "true" (non-zero). (The other operand, "0x01", is always true, so it only depends on bWork.) You probably want:

    if ((bWork & 0x01) == 1)

    to test just bit 1 of bWork.

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