       ttl     fast floating point cmp/tst (ffpcmp/ffptst)
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* (c) copyright 1981 by motorola inc. *
***************************************
 
*************************************************************
*                      ffpcmp                               *
*              fast floating point compare                  *
*                                                           *
*  input:  d6 - fast floating point argument (source)       *
*          d7 - fast floating point argument (destination)  *
*                                                           *
*  output: condition code reflecting the following branches *
*          for the result of comparing the destination      *
*          minus the source:                                *
*                                                           *
*                  gt - destination greater                 *
*                  ge - destination greater or equal to     *
*                  eq - destination equal                   *
*                  ne - destination not equal               *
*                  lt - destination less than               *
*                  le - destination less than or equal to   *
*                                                           *
*      condition codes:                                     *
*              n - cleared                                  *
*              z - set if result is zero                    *
*              v - cleared                                  *
*              c - undefined                                *
*              x - undefined                                *
*                                                           *
*               all registers transparent                   *
*                                                           *
*************************************************************
         page
ffpcmp idnt    1,1  ffp cmp/tst
 
         xdef      ffpcmp    fast floating point compare
 
       xref    ffpcpyrt        copyright notice
 
         section  9
 
***********************
* compare entry point *
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ffpcmp   cmp.b     d6,d7     compare sign and exponent only first
         bne.s     ffpcrtn   return if that is sufficient
         cmp.l     d6,d7     no, compare full longwords then
ffpcrtn  rts                 and return to the caller
         page
*************************************************************
*                     ffptst                                *
*           fast floating point test                        *
*                                                           *
*  input:  d7 - fast floating point argument                *
*                                                           *
*  output: condition codes set for the following branches:  *
*                                                           *
*                  eq - argument equals zero                *
*                  ne - argument not equal zero             *
*                  pl - argument is positive (includes zero)*
*                  mi - argument is negative                *
*                                                           *
*      condition codes:                                     *
*              n - set if result is negative                *
*              z - set if result is zero                    *
*              v - cleared                                  *
*              c - undefined                                *
*              x - undefined                                *
*                                                           *
*               all registers transparent                   *
*                                                           *
*************************************************************
         page
         xdef      ffptst    fast floating point test
 
********************
* test entry point *
********************
ffptst   tst.b     d7        return tested condition code
         rts                 to caller
 
         end

sted condition code
         rts                 to caller
 
         end

sted condition code
         rts                 to caller
 
         end

sted condition code
         rts                 to caller
 
         end

