Routines |
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The address of this routine is found in the table of addresses. It is called via the calculator literal +2A by the routines at CIRCLE, DRAW, CD_PRMS1, PRINT_FP, get_argt and cos. It is also called indirectly via fp_calc_2.
This subroutine performs its unary operation by ensuring that the sign bit of a floating-point number is reset.
'Small integers' have to be treated separately. Most of the work is shared with the 'unary minus' operation.
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abs | 346A | LD B,$FF | B is set to +FF. | |||||
346C | JR NEG_TEST | The jump is made into 'unary minus'. |
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