Floating-Point - Motorola DSP96002 User Manual

INTRZ
to Integer Conversion with Round to Zero
Operation:
Integer(D) D.L (parallel data bus move)
Description:
Convert the specified floating-point operand to 32-bit, 2's complement integer rounding towards zero. The
result is stored in the low portion of D. The high and middle portions of D remain unchanged. Since this
operation is frequently required (e. g., truncation assignment), this instruction has been implemented to
eliminate the need to change the rounding mode associated with INT.
The following table lists the results for some special cases:
Source operand
Greater than 2 31 - 1
Less than -2 31
+infinity
-infinity
NaN
Input Operand(s) Precision: SEP Floating-Point.
Output Operand Precision: 32-bit integer.
CCR Condition Codes:
C
V
Z
N
I
LR
–
R
A
A - 186

Floating-Point

Result
$7FFFFFFF
$80000000
$7FFFFFFF
$80000000
$FFFFFFFF
- Not affected.
- Set if source operand is a NaN, infinity, or its magnitude is too big to be represent-
able in the integer number range. Cleared otherwise.
- Set if result is zero. Cleared otherwise.
- Set if source operand is negative. Cleared otherwise.
- Set if source operand is infinity. Cleared otherwise.
- Not affected.
- Not affected.
- Not affected.
DSP96002 USER'S MANUAL
Assembler Syntax:
INTRZ D
(move syntax - see the Move instruction de-
scription.)
INTRZ
MOTOROLA