Motorola DSP96002 - Manual (Page 378)

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INTURZ Floating-Point INTURZ
to Unsigned Integer with Round to Zero
Operation:
Unsigned Integer(D)
→
D.L
(parallel data bus move)
Assembler Syntax:
INTURZ D (move syntax - see the Move in-
struction description.)
Description:
Convert the specified floating-point operand to 32-bit, unsigned 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 INTU.
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 negative non-zero. Set if positive source
operand is too big to be representable in the integer number range. Cleared oth-
erwise.
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.