Stereo System User Manual

A - 184 DSP96002 USER’S MANUAL MOTOROLA
INT Floating-Point to Integer Conversion INT
Operation:
Integer(D) → D.L (parallel data bus move)
Assembler Syntax:
INT D
(move syntax - see the Move instruction description.)
Description:
Convert the specified floating-point operand to 32-bit, 2’s complement integer. The rounding mode is that
programmed in the SR. The result is stored in the low portion of D. The high and middle portions of D
remain unchanged.
The following table lists the results for some special cases:
Source operand Result
Greater than 2
31
- 1 $7FFFFFFF
Less than -2
31
$80000000
+infinity $7FFFFFFF
-infinity $80000000
NaN $FFFFFFFF
Input Operand(s) Precision: SEP Floating-Point.
Output Operand Precision: 32-bit integer.
CCR Condition Codes:
C - Not affected.
V - 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.
Z - Set if result is zero. Cleared otherwise.
N - Set if source operand is negative. Cleared otherwise.
I - Set if source operand is infinity. Cleared otherwise.
LR - Not affected.
–
R - Not affected.
A - Not affected.
ER Status Bits:
INX -Set if the floating-point operand has no exact integer representation. Cleared oth-
erwise.
DZ -Always cleared.
UNF -Always cleared.