Floating point environment

Change floating point environment

fesetprec
[octave-forge/main/fenv/src/fesetprec.m]
Change the precision of the floating point arithmetics.
fesetround
[octave-forge/main/fenv/src/fesetround.m]
Change the rounding mode of the floating point arithmetics.
fe_system_dependent
[octave-forge/main/fenv/src/fe_system_dependent.cc]
usage
system_dependent
[octave-forge/main/fenv/src/system_dependent.m]
This function is intentionally left undocumented.

Test floating point environment

fetestenv
[octave-forge/main/fenv/src/fetestenv.m]
Check some properties of floating point arithmetics: the rounding mode and the machine epsilon, as seen by Octave's interpreted code (ROUND and MACHEPS, respectively) and, if requested, as seen by BLAS (ROUNDB and MACHEPSB, respectively).