System Functions and Variables¶
CR Display Function¶
Given a function name as right parameter,
CR returns the source code
of the function in a character matrix. The extra space in a line will be
filled with blanks.
CR 'function name' //two quotes are required
|h<-open v||Open a file and start file stream|
|t<-close h||Close file stream with specified file handler|
|v||String, presents the path of the designated file|
|h||File handler with integer value greater equal than 1000|
close are used in pairs.
open opens a file and saves a handler for file streaming and
close safely closes the file stream at the end of writing.
open allows multiple file open on a same file, but a different
file handler will be returned.
close checks the file handler
before it is closed. If it is a valid one, it will be closed
immediately with return value 0. Otherwise, an integer 1 should be returned.
PP Printing Precision¶
|PP<-V||Set the precision of printing for floating point and complex number|
|V||Positive integer scalar|
PP is a system variable and its value should be greater than 0. On the other words, the minimal value of PP is 1. PP controls the output precision of the floating point and complex number.
PP 10 1%3 0.3333333333 PP<-6 1%3 0.333333
PP 10 2j3%3 0.6666666667j1 PP<-6 2j3%3 0.666667j1
Except floating point and complex number, PP does not take effect on integer and any other types.
PP<-1 333 333 333.0 3e2