lcms: backport upstream commit c0a98d86

third_party/lcms2-2.6/src/cmsintrp.c

 //---------------------------------------------------------------------------------
 //
 //  Little Color Management System
 //  Copyright (c) 1998-2012 Marti Maria Saguer
 //
 // Permission is hereby granted, free of charge, to any person obtaining
 // a copy of this software and associated documentation files (the "Software"),
 // to deal in the Software without restriction, including without limitation
 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
 // and/or sell copies of the Software, and to permit persons to whom the Software
@@ skipping 197 matching lines @@
     y0 = LutTable[cell0];
     y1 = LutTable[cell0+1];
 
 
     Output[0] = LinearInterp(rest, y0, y1);
 }
 
 // To prevent out of bounds indexing
 cmsINLINE cmsFloat32Number fclamp(cmsFloat32Number v) 
 {
-    return v < 0.0f ? 0.0f : (v > 1.0f ? 1.0f : v);
+    return ((v < 0.0f) || isnan(v)) ? 0.0f : (v > 1.0f ? 1.0f : v);
 }
 
 // Floating-point version of 1D interpolation
 static
 void LinLerp1Dfloat(const cmsFloat32Number Value[],
                     cmsFloat32Number Output[],
                     const cmsInterpParams* p)
 {
        cmsFloat32Number y1, y0;
        cmsFloat32Number val2, rest;
@@ skipping 1268 matching lines @@
                break;
 
                break;
 
            default:
                Interpolation.Lerp16 = NULL;
     }
 
     return Interpolation;
 }