5 ms·
Before isnan() the Fortran test for NaN was (x .ne. x), assuming an IEEE 754 implementation.
by gnufx 6mo ago
Before isnan() the Fortran test for NaN was (x .ne. x), assuming an IEEE 754 implementation.
- pklausler 6mo agoI wish that (still) worked reliably, but it can unfortunately get one into trouble with some compilers and some optimization modes that assume that NaNs are undefined behavior.