The functions are numbered in the order they are added to GCS.

I am adding functions just for my fun, rather randomly. They are beyond the scope of the purpose of this website where I am introducing the concept of GCS, and I placed these additional functions and their examples in the secluded pages.

36	double erf(double x)
Error function
37	double Jn(int n,double x)
Bessel function of the first kind of order n
38	double Yn(int n,double x)
Bessel function of the second kind of order n
39	double refday(double mdy,double hms)
The reference day is a Julian day with some offset. mdy is month-day-year in mm.ddyyyy. hms is hour-mimute-second in hh.mmss. The returned value has a fraction that corresponds to the time in the day.
40	double mdyday(double ref)
Month-day-year in mm.ddyyyy for a given reference day.
41	double hmsday(double ref)
Hour-minute-second in hh.mmss for a given reference day
42	void DrawNum(int num)
Draw an integer number
43	void DrawFNum(char *fmt,double x)
Draw a formatted double number. fmt is a literal with % and f format.
44	void exit(int i)
terminate execution. int number will be printed and returned to client.
45	void PngOut(void)
Generate and return PNG file. Can be used interchangeably with GifOut().