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Inside Macintosh: Operating System Utilities /
Chapter 3 - Mathematical and Logical Utilities / Mathematical and Logical Utilities Reference
Routines / Multiplying and Dividing Fixed-Point Numbers


FracMul

You can use the FracMul function to multiply a variable of type Fract with another variable of type Fract or with a variable of type Fixed or LongInt.

FUNCTION FracMul (a, b: Fract): Fract;
a
The first operand, which can be a variable of type Fract or a variable of type Fixed or LongInt.
b
The second operand, which can be a variable of type Fract or a variable of type Fixed or LongInt.
DESCRIPTION
The FracMul function returns the product of the numbers specified in the a and b parameters. At least one of a or b should be a variable of type Fract.

The returned value is in the format of a LongInt number if one of a and b is a LongInt number. It is a Fixed number if one of a or b is a Fixed number. It is a Fract number if both a and b are Fract numbers.

Overflows are set to the maximum representable value with the correct sign ($80000000 for negative results and $7FFFFFFF for positive results).

SEE ALSO
For a summary of the routines that perform operations on the Fixed and Fract data type, see Table 3-2 on page 3-26.


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6 JUL 1996

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