378
The
VIC
20
User
Guide
MMS.RIGHT$()($+
"4t
" ,5)
MM$
is
assigned the last four characters of X$,
plus the character
#
RND
RND
generates random number sequences ranging between 0 and
1.
Format:
RND(arg
n)
Return random number
RND(-arg
n)
Store new seed number
Example:
A"RND(-1)
Store a new seed based
on
the value
-I
A"RND(
1)
Fetch the next random number in sequence
An argument
of
zero
is
treated as a special case; it does
not
store a new
seed,
nor
does it return a random number. RND(O) uses the current system
time value TI to introduce
an
additional random element into play.
A pseudo-random seed
is
stored by the following function:
RND(-TI) Store pseudo-random seed
RND(O) can be used to store a new seed
that
is
more truly
random
by
using the following function:
RND(-RNDC0»
Store random seed
For
a complete discussion
of
the
RND
function see Chapter
5.
SGN
SGN determines whether a number
is
positive, negative,
or
zero.
Format:
SGN(argn)
The SGN function returns + 1 if the number
is
positive
or
nonzero, 0 if
the number
is
zero,
or
-1
if the number
is
negative.
Example:
?SGN(-6)
?SI3N(0)
?SON(44)
Displays
-I
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Displays 1
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