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667
Double-precision Floating-point Instructions (CS1-H, CJ1-H, CJ1M, or CS1D Only)
Section 3-16
Description
–D(846) subtracts the double-precision (64-bit) floating-point number in words
Su to Su+3 from the double-precision (64-bit) floating-point number in Mi to
Mi+3 and places the result in words D to D+3. (The floating point data must be
in IEEE754 format.)
If the absolute value of the result is greater than the maximum value that can
be expressed as floating-point data, the Overflow Flag will turn ON and the
result will be output as
±∞
.
If the absolute value of the result is less than the minimum value that can be
expressed as floating-point data, the Underflow Flag will turn ON and the
result will be output as 0.
The various combinations of minuend and subtrahend data will produce the
results shown in the following table.
Note
1.
The results could be zero (including underflows), a numeral, +
∞
, or –
∞
.
2.
The Error Flag will be turned ON and the instruction will not be executed.
EM Area with bank
En_00000 to En_32764
(n = 0 to C)
Indirect DM/EM
addresses in binary
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
Indirect DM/EM
addresses in BCD
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
Constants
---
Data Registers
---
Index Registers
---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Area
Mi
Su
D
Minuend
Subtrahend
0
Numeral
+
∞
–
∞
NaN
0
0
Numeral
+
∞
–
∞
Numeral
Numeral
See note 1.
+
∞
–
∞
+
∞
–
∞
–
∞
See note 2.
–
∞
–
∞
+
∞
+
∞
+
∞
See note 2.
NaN
See note 2.
S1+1CH
S2+1CH
−
S1CH
S2CH
D+1CH
DCH
S1+2CH
S2+2CH
D+2CH
S1+3CH
S2+3CH
D+3CH
Result (floating-point data, 64-bits)
Subtrahend (floating-point data, 64-bits)
Minuend (floating-point data, 64-bits)
Содержание SYSMAC CS1D-CPU**
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Страница 185: ...146 List of Instructions by Function Code Section 2 4...
Страница 193: ...154 3 35 4 MOVE BIT MOVBC 568 1274 3 35 5 BIT COUNTER BCNTC 621 1276 3 35 6 GET VARIABLE ID GETID 286 1278...
Страница 1389: ...1350 CJ series Instruction Execution Times and Number of Steps Section 4 2...
Страница 1390: ...1351 Appendix A ASCII Code Table ASCII SP Four leftmost bits Four rightmost bits...
Страница 1391: ...1352 ASCII Code Table Appendix A...