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Programming in HP PPL 555
second list. The plus operator between them adds the two
elements until there are no more pairs. With two lists, the
numbers appended to & can have two digits; in this case,
the first digit refers to the list number (in order from left to
right) and the second digit can still only be from 1 to 9
inclusive.
EXECON can also begin operating on a specified
element in a specified list. For example:
EXECON("&23+&1",{1,5,16},{4,5,6,7}) returns
{7,12}
In the example above, &23 indicates that operations are
to begin on the second list and with the third element. To
that element is added the first element in the first list. The
process continues until there are no more pairs.
→HMS Syntax: →HMS(value)
Converts a decimal value to hexagesimal format; that is,
in units subdivided into groups of 60. This includes
degrees, minutes, and seconds as well as hours, minutes,
and seconds.
Example:
→
HMS(54.8763) returns 54°52′34.68″
HMS→ Syntax: HMS→(value)
Converts a value expressed hexagesimal format to
decimal format.
Example: HMS
→
(54°52′34.68″) returns 54.8763
ITERATE Syntax: ITERATE(expr, var, ivalue, #times)
For #times, recursively evaluates expr in terms of var
beginning with var = ivalue.
Example: ITERATE(X^2, X, 2, 3) returns 256
TICKS Syntax: TICKS
Returns the internal clock value in milliseconds.
TIME Syntax: TIME(program_name)
Returns the time in milliseconds required to execute the
program program_name. The results are stored in the
variable TIME. The variable TICKS is similar. It contains
the number of milliseconds since boot up.