Commodore Plus 4 - Page 170

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EXAMPLE:
= INT{RND(l)*6)+INT(RND(l)t6) + 2
= INT(RND(1)*1000) + 1
= INT(RND(l)*150) + 100
Simulates 2 dice.
Number from 1-1000.
Number from 100-249.
J
-J
SGN(X) (sign)
This function returns the sign, as in positive, negative, or zero, of X. The
result is + 1 if positive, 0 if zero, and - 1 if negative.
SIN{X) (sine)
This is the trigonometric sine function. The result is the sine of X, where
Xisan angle in radians.
SQR(X) (square root)
This function returns the square root of X, where X is a positive
number or 0. If X is negative, an ILLEGAL QUANTITY ERROR results.
TAN{X) (tangent)
This gives the tangent of X, where X is an angle in radians.
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USR(X)
When Ihis function is used, the program jumps to a machine language
program whose starting point is contained in memory locations 1281
and 1282. The parameter X is passed to the machine language pro- —
gram in the floating point accumulator. Another number is passed back
to the BASIC program through the calling variable. In other words, this ,
allows you to exchange a variable between machine code and BASIC.
See the Plus/4 PROGRAMMERS REFERENCE GUIDE for more details
on this, and on machine language programming.
VAL(XS) __
This function converts the string X$ into a number, and is essentially
the inverse operation from STR$. The string is examined from the left
most character to the right, for as many characters as are in recog-
nizable number format. If the Plus/4 finds illegal characters, only the
portion of the string up to that point is converted. —.
EXAMPLE:
10X = VAL("123.456")
10X = VAL("3E03")
10X = VAL("12A13B")
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