Motorola DSP96002 - Manual (Page 662)

MOTOROLA DSP96002 USER’S MANUAL B-143
fadd.s d4,d0 1 1
move d0.s,y:output
_gen --- ---
Totals: 5 5
B.2 IEEE STANDARD CONFORMANCE FUNCTIONS
B.2.1 IEEE Remainder
B.2.2 IEEE floating-point Round to Integer
The IEEE standard section 5.5 specifies that it shall be possible to round a floating-point number to an in-
tegral valued floating point number in the same format. If the rounding mode is round to nearest, the round-
ed result is even if the difference between the rounded result and the unrounded operand is exactly one
half.
Program ICycles
Words
fint d0 ;round to nearest integer 1 1
--- ---
1 1
The FINT instruction rounds the number in d0 according to the current rounding mode.
B.2.3 IEEE floating-point to Decimal String
B.2.4 IEEE Decimal String to floating-point
B.2.5 Format Conversions
The IEEE standard states that it shall be possible to convert between all supported floating-point formats
and all supported integer formats. Conversions between floating-point integers and integer formats shall
be exact unless an exception arises. If the floating point number is infinity, a NaN or overflows the integer
data type, then the invalid operation is signaled.
Some conversions may require range checking to signal an error if the source would produce an invalid
result for the destination data type. In some programming languages, the programmer is responsible for
the correct value of the source and the conversion of an out of range source produces an erroneous result.
In the conversion descriptions, conversions that require range checking will perform the actual range