Alternative div_qr_1

Torbjorn Granlund tg at
Mon May 10 18:35:40 CEST 2010

  Not sure how to best do that conditional subtraction in assembler, but
  it could be something like
One trick on x86 is to precompute the negation of <c1,c0>, since then it will
be possible to do the conditional "subtract" using two LEA and two CMOV.


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