I use ounit to test the code of my lexer + parser. I have test input which should result in a NaN; I don’t know how to test this because NaN != NaN , so assert_equal will fail :frowning: – Ian

Try Float.is_nan. See OCaml library : Float .

Assertions involving NaN

xavierleroy November 6, 2022, 11:19am 4

You can also use Float.compare x y = 0 instead of x = y. Float.compare compares NaNs equal and Nan and non-NaN different.

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