functions

计算器

log		log10	1
ln		log		1
abs		abs		1
arccos	acos	1
arcsin	asin	1
arctan	atan	1
ceil	ceil	1
cos		cos		1
cosh	cosh	1
exp		exp		1
floor	floor	1
max		max		2
min		min		2
pow		pow		2
random	random	0
sin		sin		1
sinh	sinh	1
sqrt	sqrt	1
tan		tan		1