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CALC(1) |STAT November 2, 1985
NAME
calc - algebraic formula calculator with variables
SYNOPSIS
calc [files]
DESCRIPTION
_c_a_l_c is a calculator for doing real arithmetic using familiar infix
notation. _c_a_l_c uses a calculation method based on the popular program
VisiCalc in that it allows variables to be define by equations. For
example,
A = B + C * D
says that whatever B, C, and D are, A is equal to the above function
of them. If B, C, or D change, then so does the value of A because it
depends on them. (To set A to the value of a function of several
variables so that it doesn't change over time, you prepend a # before
the = sign to emphasize you want the current value.) In _c_a_l_c, you get
the prompt, "CALC: ", and you type in an expression to be calculated.
You can use numbers and even variables. For example,
12 + 123/6
a = b^2 + log (sqrt (c))
AVeryLongVariableName = (a+b) - c*d/e ^ f%log (sqrt (exp (abs (x))))
The usual operators and precedences are available along with the
common mathematical functions. Parentheses can be used for clarity.
EXAMPLE
The following example computes the roots of the equation:
y = a * x^2 + b * x + c
where a, b, and c are left undefined.
y = (((a * (x ^ 2)) + (b * x)) + c)
radical = sqrt(((b * b) - ((4 * a) * c)))
root1 = ((-b - radical) / (2 * a))
root2 = ((-b + radical) / (2 * a))
SEE ALSO
The CALC Manual in the |STAT Handbook
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.