Topic       : The GFA-Basic Compendium
Author      : GFA Systemtechnik GmbH
Version     : GFABasic.HYP v2.98 (12/31/2023)
Subject     : Documentation/Programming
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Index Size  : 28056
HCP-Version : 3
Compiled on : Atari
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View Ref-FileINT(x)
TRUNC(x)
FIX(x)
FRAC(x)

x: aexp

These functions allow independent manipulation of the parts of a numerical
expression to the left and right of the decimal point: INT(), TRUNC(), and
FIX() (TRUNC() and FIX() are identical) return a whole number.

The function TRUNC() simply cuts off the digits to the right of the decimal
point.

INT() returns the largest whole number which is less than or equal to x. There
is no difference between TRUNC() (or FIX()) and INT() for positive x-values,
however, with a negative, non-integer x a difference arises. So TRUNC(-1.2)
removes the decimal places and returns -1 as the result. INT(-1.2), on the
other hand, returns the next smaller whole number, namely -2.

FRAC() returns only the fractional part of x, in other words just the decimal
places, with the same sign as x had. FRAC() is complementary to TRUNC() and
not to INT(). It is always true that x=TRUNC(x)+FRAC(x), but INT(x)+FRAC(x) is
not equal to x for negative values.

Example:

    x=-1.4
    y=TRUNC(1.3)
    PRINT y,INT(x),FIX(3*x),FRAC(x-3)

--> The numbers 1, -2, -4 and -0.4 are displayed.