Allows access to the floating-point environment.
#pragma STDC FENV_ACCESS on | off | default
This pragma must be set to on to specify to the compiler that the program will use the facilities in the fenv.h header file.
Place this directive before external declarations to specify that subsequent object declarations will access the floating-point environment. This placement's effect spans until the next directive or the end of the source file. Place this directive at the beginning of compound statement to specify that the statements within the compound statement will access the environment. This placement's effect lasts until the next directive or the end of the compound statement.
This facility may not be available on configurations of the EWL that run on platforms that do not have floating-point math capabilities.