The 'Real' Group Of Functions - HP 39gs Master Manual

T h e ' R e a l ' g r o u p
T h e ' R e a l ' g r o u
CEILING(<num>)
This is a 'rounding' function but different in that it always rounds up to the integer above. Mainly of interest to
programmers.
Eg.
CEILING(3.2)
CEILING(32.99)
CEILING((12+ 6)/7)
Note:
CEILING(-2.56)
to the next integer above, which is -2.
See also: ,
ROUND TRUNCATE
DEG RAD(<deg>)
This function converts degrees to radians.
Eg.
DEG RAD(30)
DEG RAD(180)
See also:
RAD DEG
FLOOR(<num>)
This function is the same as the
rounds down.
Eg. = 3
FLOOR(3.75)
FLOOR(45.01)
Note:
FLOOR(-2.56)
The function is the same as the mathematical function 'greatest
FLOOR
integer' which is studied in many mathematical courses.
If you want to graph the greatest integer function then you will need to
use the view to turn off
PLOT SETUP
is supposed to be a discontinuous step function. The result with
turned on is not good.
CONNECT
o f f u n c t i o n s
p o f f u n c t i o n s
= 4
= 33
=
CEILING(2.0642...)
= -2 not -3. The
CEILING
, ,
FLOOR INT
= 0.5235...
= 3.1415926...
, ,
HMS HMS
function, except that it always
CEILING
= 45
= -3 not -2.
CONNECT
= 3
function rounds up
first, since the graph
170