maybe its just too simple for me, but i dont find a working
expression on my own.

-110

Is that what you trying to achieve ? :

[ expr $f1-int($f1/$f2)*$f2 ]

charles

Of course, it doesn’t.

One could file a feature request for expr to support fmod() (or, better still, a % float-operator).

In the meantime, there’s Ch’s suggestion.

And, of course, the % object, which started supporting floats in an early Max 4 release.

i have never made a float % abstraction myself (back in OS9
when % did not support floats) because i simply never needed
it to do floats, that is why i did not knew it offhand.

maybe i make one now.

but in this case i need stuff to work inside expr as this
saves patchcords and improves timing.

actually it is suprising that [expr] does not support “fmod”
or “%”, which is probably a less excotic function than natural
log (which noone ever uses) isnt it?

well, there will be a reason for it, we discussed the nature
of calling expr´s function earlier.

-110

Claiming “no one ever uses” any given function is just begging, pleading to be contradicted, isn’t it?

Frankly, I use natural log as often as any of the trig/log functions.

But more to the point is the rather idiosyncratic choices made by expr of which functions from the C math library to support and which to ignore. fmod() would definitely be useful.

Ideally, expr should support all the functions in ISO/IEC 9899:1999 that simply return a value. (ie, functions like frexp(double, int *) with a secondary return value as a pointer argument won’t fit into the expr paradigm).

Does Cycling 74 need an ‘official’ bug report to do anything about this?

i just found out that

[expr $f1 % $f2]

is how it actually works!

thats already the second new thing i learned about expr/if
this week. the whole thing seems to be more inconsistent than
in your most wet dream.

-110

[expr $f1 % $f2] outputs the same result as [expr $i1 % $i2],
which is not what i expect.
the only difference is that if $f2 is between 0. and 1., then max crashes (the divide by 0 isn’t detected).

by the way, a nice thing about expr that is stated in the reference :
“Additional functions can be added by means of external code resources placed in Max’s startup folder.”
Have you ever tried that?

Charles

you are right, it does not do float.

but the % sign alone was a surprise for me – i mainly asked
for a formula because i thought % would not work at all.

somehow i tend to think that everything which is fully
supported by the object is noted in the helpfile.

(like i said in the other thread the only additional “undocumented”
feature i knew about was comparison operators.)

Quote:

“Additional functions can be added by means of external code resources placed in Max’s startup folder.” Have you ever tried that?

Charles

whoa. no!

and i assume i would need to write c classes for that …

but i dont have time to discuss that now, as i am going to
implement a coffeemachine in my startup folder asap.

-110

.