Provided by: opencl-1.2-man-doc_1.0~svn22836-1.1_all
cl_khr_fp64 - Provided for backward compatibility if double floating-point precision is supported. #pragma OPENCL EXTENSION cl_khr_fp64 : enable
The 64-bit double scalar and corresponding vector types are optional types that are supported if CL_DEVICE_DOUBLE_FP_CONFIG in the table of allowed values for param_name for clGetDeviceInfo(3clc) for a device is not zero. The double data type must confirm to the IEEE-754 double precision storage format.
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1. OpenCL Specification page 46, section 4.2 - Querying Devices