Include cmath header for clang #301
Include cmath header for clang #301

lovell/sharp,chrisriley/sharp,chrisriley/sharp,mdimitrov/sharp,cmtt/sharp,chrisriley/sharp,digital-flowers/sharp-win32,lovell/sharp,digital-flowers/sharp-win32,papandreou/sharp,papandreou/sharp,digital-flowers/sharp-win32,digital-flowers/sharp-win32,papandreou/sharp,mdimitrov/sharp,lovell/sharp,cmtt/sharp,cmtt/sharp,brandonaaron/sharp,pporada-gl/sharp,pporada-gl/sharp,brandonaaron/sharp,papandreou/sharp,pporada-gl/sharp,mdimitrov/sharp,lovell/sharp,brandonaaron/sharp,lovell/sharp,digital-flowers/sharp-win32,cmtt/sharp,mhirsch/sharp,pporada-gl/sharp,pporada-gl/sharp,brandonaaron/sharp,brandonaaron/sharp,mdimitrov/sharp,digital-flowers/sharp-win32,mhirsch/sharp,mhirsch/sharp,papandreou/sharp,chrisriley/sharp,mhirsch/sharp,digital-flowers/sharp-win32,lovell/sharp,mdimitrov/sharp,chrisriley/sharp