OpenGL spec only defines functions such as addition, multiplication, divison, sqrt and a few comparisons and clamp etc for double-precision. However, Nvidia hardware implements many more double-precision functions (such as trigonometric functions) and these are accessible from CUDA and OpenCL. I was wondering if there is a vendor extension that allows double-precision trigonometric and trascendental functions in GLSL. Particularly interested in using these in GL 4.3 compute shaders.
If there is no such extension, please consider this a request for a new extension :)