453     cmsCIELCh LCh1, LCh2;  in cmsCIE94DeltaE()  local
460     cmsLab2LCh(&LCh2, Lab2);  in cmsCIE94DeltaE()
462     dC  = fabs(LCh1.C - LCh2.C);  in cmsCIE94DeltaE()
471     c12 = sqrt(LCh1.C * LCh2.C);  in cmsCIE94DeltaE()
501     cmsCIELCh LCh1, LCh2;  in cmsBFDdeltaE()  local
509     cmsLab2LCh(&LCh2, Lab2);  in cmsBFDdeltaE()
511     deltaC = LCh2.C - LCh1.C;  in cmsBFDdeltaE()
512     AveC = (LCh1.C+LCh2.C)/2;  in cmsBFDdeltaE()
513     Aveh = (LCh1.h+LCh2.h)/2;  in cmsBFDdeltaE()
551   cmsCIELCh LCh1, LCh2;  in cmsCMCdeltaE()  local
556   cmsLab2LCh(&LCh2, Lab2);  in cmsCMCdeltaE()
560   dC = LCh2.C-LCh1.C;  in cmsCMCdeltaE()