doe300 / vc4clstdlib Goto Github PK

For most of the mathematical functions, edge-case behaviour (NaN and Inf) are not supported at all. Though not required by the OpenCL embedded profile, it would be nice to correctly handle these cases.

Also, when done, add flags to CL_DEVICE_SINGLE_FP_CONFIG.

Some header files, such as VC4CLStdLib/include/_math.h, have mixed indentation (spaces and tabs). This breaks on some editors and viewers which do not respect that a tab is 4 characters wide. One of those weird editors and viewers is the web version of Github, which assumes that a tab is 8 characters wide. In those editors, the code looks like it were incorrectly indented, so readability suffers.

For all mathematical functions, check and improve (if necessary) the numerical compliance.
Update the file doc/NumericalCompliance.md accordingly.

List of useful sources:

• http://gams.nist.gov/cgi-bin/serve.cgi/ (especially section C)
• http://www.netlib.org/fdlibm/
• http://www.netlib.org/cephes/qlibdoc.html
• https://www.johndcook.com/blog/stand_alone_code/
• https://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html