Built-in Function

This section describes the built-in function in mimium.

delay(input:float,time:float)->float

Returns delayed input value with the duration of time(unit: samples).

For example, the delay can be combined with self to create a feedback delay as shown below.

fn fbdelay(input:float,time:float,feedback:float){
    return delay(input*self*feedback,time)
}

random()->float

Returns random value in a range of -1 to 1。An acutual implementation on C++ uses rand() function in C standard library like below.

 (double)rand() / RAND_MAX) * 2 - 1

Basic mathematical functions

Listed functions in math.h of C language is included in mimium by default.

Takes one float and returns one float if it has no explanation.

• sin
• cos
• tan
• asin
• acos
• atan
• atan2 (x,y)
• sinh
• cosh
• tanh
• log
• log10
• exp
• pow (x,y)
• sqrt
• abs
• ceil
• floor
• trunc
• round
• fmod (x,y)　% operator is an alias to this function.
• remainder (x,y)
• min (x,y) alias to fmin in C language.
• max (x,y) alias to fmax in C language.

print / println / printstr

Mainly used for debugging purpose.

Print values to stdout. print,println accept number type as parameter. println output value with newline. You can output string type values by using printstr.

loadwav(path:string)->[float x 0] / loadwavsize(path:string)->float

Load audio files by using LibSndFile.

Both take the file path of the audio file (.wav, .aiff, .flac, etc.) as a parameter.

If the path is not absolute, it is interpreted as relative to the location of the source file.

loadwavsize(path) returns the number of samples of the audio file.

loadwav(path) returns the audio file as a read array. If you access the file with an index larger than the file size, it will crash, so you need to use the value of loadwavsize to limit the value.