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2018 Jan 12
0
[cfe-dev] Why is #pragma STDC FENV_ACCESS not supported?
...ll give some data points from our OpenVMS Itanium (and Alpha) platforms where we support multiple IEEE modes and dynamic rounding in our C and Fortran compilers (we don't have actual FENV_ACCESS in our C product but you can come close). On the command line, you get to pick IEEE modes with:   /IEEE_MODE         /IEEE_MODE=option         /IEEE_MODE=DENORM_RESULTS (D)      Selects the IEEE floating-point mode to be used.      Options:       FAST              During program execution, only finite values (no                         infinities, NaNs, or denorms) are created.                       ...