Logarithmic and exponential functions

[axcmp]

Suggesting the implementation of logarithmic and exponential functions into Tidal.

log function prototype

log x base

Base could be optional, with e being the default value.

Example results:

log 1000 == 6.907755278982137

log 1000 10 == 3

log 1000 2 == 9.965784284662087

etc.

d1 $ s “sample”
	# speed (slow 2 $ log ((run 100) + 1) 100)

exp function prototype

exp x

Example result:

exp 2 == 7.38905609893065

d1 $ s “sample”
	# speed (exp (rand))

[bgold-cosmos]

log and exp already exist in Haskell, and Haskell does not allow optional (default) function arguments

[axcmp]

@bgold-cosmos Thank you for your answer. Do you know where I can find information on how to use them in Tidal?
I couldn’t find it at Tidal’s user base, that’s one of the reasons why I opened this issue.

[bgold-cosmos]

I don't know if there's explicit documentation, but you can use exp and log on patterns as if they were numbers. From your example:

d1 $ s "sample" # speed (slow 2 $ log (run 100 + 1))

should just work, although Haskell's log is base e. You can get base b by just dividing by log b:

d1 $ s "sample" # speed (slow 2 $ log (run 100 + 1) / log 100)

[axcmp]

@bgold-cosmos Yes, this may be it.