BASIC-80
cos The COS function returns the cosine value
of
the specified expression. The input
is
given in radians.
The
calculation
is
performed
in
single precision.
COS(expression)
10 INPUT
A 20
B = COS (A)
30 PRINT B
40
END
RUN
?5 .2836621
Ok
CSNG
The CSNG(X) function changes the type
of
expression into single-precision floating-
point representation. In this format, calculations are accurate
to
seven decimal
places, compared
to
an
accuracy
of
sixteen decimal places in double precision
floating-point representation.
Performing calculations in single precision
is
faster than
in
double precision
but
may
not
be as accurate.
CSNG(expression)
10 A# =
1.00/3.00 20
PRINT
CSNG
(A#)
12,
A#/2
RUN
.1666667
.1666666666666667
CVI
CVS
eve
The CVI, CVS,
and
CVD functions convert strings into numbers. CVI converts a
two character string into
an
integer by simply moving the two characters into the in-
ternal integer representation. CVS converts a four character string
to
single preci-
sion, and CVD converts
an
eight character string into double precision in a similar
fashion.
These functions are used to retrieve numeric values from a random file buffer field,
and are the reverse
of
MKI$, MKS$, and MKD$.
CVx(string
expression)
AO/o = 1
B!=2
C#=3
0$
=
MKI$(AO/o)
+ MKS$(B!) + MKD$(C#)
A
% = CVI
(0$)
B! = CVS (MIO$(O$, 3))
C# = CVO (MIO$(O$, 7))
PRINT A,
B!,
C#
1 2 3 Functions
7-3