75     cmsCIELab  Lab;  in BlackPointAsDarkerColorant()  local
124     cmsDoTransform(xform, Black, &Lab, 1);  in BlackPointAsDarkerColorant()
127     Lab.a = Lab.b = 0;  in BlackPointAsDarkerColorant()
128     if (Lab.L > 50) Lab.L = 50;  in BlackPointAsDarkerColorant()
134     cmsLab2XYZ(NULL, &BlackXYZ, &Lab);  in BlackPointAsDarkerColorant()
237             cmsCIELab Lab;  in cmsDetectBlackPoint()  local
251                 cmsXYZ2Lab(NULL, &Lab, &UntrustedBlackPoint);  in cmsDetectBlackPoint()
252                 Lab.a = Lab.b = 0;  in cmsDetectBlackPoint()
253                 if (Lab.L > 50) Lab.L = 50; // Clip to L* <= 50  in cmsDetectBlackPoint()
254                 cmsLab2XYZ(NULL, &TrustedBlackPoint, &Lab);  in cmsDetectBlackPoint()
351     cmsCIELab InitialLab, destLab, Lab;  in cmsDetectDestinationBlackPoint()  local
443         Lab.L = (cmsFloat64Number) (l * 100.0) / 255.0;  in cmsDetectDestinationBlackPoint()
444         Lab.a = cmsmin(50, cmsmax(-50, InitialLab.a));  in cmsDetectDestinationBlackPoint()
445         Lab.b = cmsmin(50, cmsmax(-50, InitialLab.b));  in cmsDetectDestinationBlackPoint()
447         cmsDoTransform(hRoundTrip, &Lab, &destLab, 1);  in cmsDetectDestinationBlackPoint()
449         inRamp[l]  = Lab.L;  in cmsDetectDestinationBlackPoint()
534     Lab.L = RootOfLeastSquaresFitQuadraticCurve(n, x, y);  in cmsDetectDestinationBlackPoint()
536     if (Lab.L < 0.0) { // clip to zero L* if the vertex is negative  in cmsDetectDestinationBlackPoint()
537         Lab.L = 0;  in cmsDetectDestinationBlackPoint()
540     Lab.a = InitialLab.a;  in cmsDetectDestinationBlackPoint()
541     Lab.b = InitialLab.b;  in cmsDetectDestinationBlackPoint()
543     cmsLab2XYZ(NULL, BlackPoint, &Lab);  in cmsDetectDestinationBlackPoint()