438 cmsFloat64Number CMSEXPORT cmsDeltaE(const cmsCIELab* Lab1, const cmsCIELab* Lab2)  in cmsDeltaE()  argument
442     dL = fabs(Lab1 -> L - Lab2 -> L);  in cmsDeltaE()
443     da = fabs(Lab1 -> a - Lab2 -> a);  in cmsDeltaE()
444     db = fabs(Lab1 -> b - Lab2 -> b);  in cmsDeltaE()
451 cmsFloat64Number CMSEXPORT cmsCIE94DeltaE(const cmsCIELab* Lab1, const cmsCIELab* Lab2)  in cmsCIE94DeltaE()  argument
457     dL = fabs(Lab1 ->L - Lab2 ->L);  in cmsCIE94DeltaE()
459     cmsLab2LCh(&LCh1, Lab1);  in cmsCIE94DeltaE()
463     dE  = cmsDeltaE(Lab1, Lab2);  in cmsCIE94DeltaE()
497 cmsFloat64Number CMSEXPORT cmsBFDdeltaE(const cmsCIELab* Lab1, const cmsCIELab* Lab2)  in cmsBFDdeltaE()  argument
504     lbfd1 = ComputeLBFD(Lab1);  in cmsBFDdeltaE()
508     cmsLab2LCh(&LCh1, Lab1);  in cmsBFDdeltaE()
515     dE = cmsDeltaE(Lab1, Lab2);  in cmsBFDdeltaE()
517     if (Sqr(dE)>(Sqr(Lab2->L-Lab1->L)+Sqr(deltaC)))  in cmsBFDdeltaE()
518         deltah = sqrt(Sqr(dE)-Sqr(Lab2->L-Lab1->L)-Sqr(deltaC));  in cmsBFDdeltaE()
548 cmsFloat64Number CMSEXPORT cmsCMCdeltaE(const cmsCIELab* Lab1, const cmsCIELab* Lab2, cmsFloat64Num…  in cmsCMCdeltaE()  argument
553   if (Lab1 ->L == 0 && Lab2 ->L == 0) return 0;  in cmsCMCdeltaE()
555   cmsLab2LCh(&LCh1, Lab1);  in cmsCMCdeltaE()
559   dL = Lab2->L-Lab1->L;  in cmsCMCdeltaE()
562   dE = cmsDeltaE(Lab1, Lab2);  in cmsCMCdeltaE()
575    sl  = 0.040975 * Lab1->L /(1 + 0.01765 * Lab1->L);  in cmsCMCdeltaE()
577    if (Lab1->L<16)  in cmsCMCdeltaE()
589 cmsFloat64Number CMSEXPORT cmsCIE2000DeltaE(const cmsCIELab* Lab1, const cmsCIELab* Lab2,  in cmsCIE2000DeltaE()  argument
592     cmsFloat64Number L1  = Lab1->L;  in cmsCIE2000DeltaE()
593     cmsFloat64Number a1  = Lab1->a;  in cmsCIE2000DeltaE()
594     cmsFloat64Number b1  = Lab1->b;  in cmsCIE2000DeltaE()