after this question, I don't know what to think.
In OCaml, if you do something like -1.0**2.0 (because of the typing you need to have float), you obtain 1.00. According to the standard order of operations, the result should be -1 (as in python).
I wasn't able to find the reason or a clear definition of the operator precedence in OCaml...
Is this because of the type system ? or the fact that there's a binding underneath with pow ?
As the very page you quote says, "The order in which the unary operator − (usually read "minus") acts is often problematical." -- it quotes Excel and bc as having the same priority for it as O'CAML, but also says "In written or printed mathematics" it works as in Python. So, essentially, there's no universal consensus on this specific issue.
Operator precedence is syntax-directed in OCaml, which means that the first character of the function identifier (and whether it's unary or binary) determines the operator precedence according to a fixed sequence. Contrast this with languages like Haskell, where the operator precedence can be specified at function definition regardless of which characters are used to form the function identifier.
