(142)
APR #0000 D00000 D00100
0000
00
0000
02
(142)
APR #0001 D00010 D00200
328
5-23-7 ARITHMETIC PROCESS: APR(142)
Variations
j APR(142)
(142)
APR C S R
S: Source data CIO, G, A, T, C, #, DM, DR, IR
R: Result word CIO, G, A, DM, DR, IR
C: Control word CIO, G, A, #, DM, DR, IR
Operand Data AreasLadder Symbol
When the execution condition is OFF, APR(142) is not executed. When the ex-
ecution condition is ON, the operation of APR(142) depends on the control word
C. If C is 0000 or 0001, APR(142) computes the sine or cosine of S. S in units of
tenths of degrees.
If C is a word address, APR(142) extrapolates the Y value for the X value in S
based on coordinates (forming line segments) entered in advance in a table be-
ginning at C.
For trigonometric functions, S must be BCD between 0000 and 0900 (between
0° and 90°). For linear extrapolation, S must be BCD when set for BCD.
C must be #0000, #0001, or a word address.
Note Refer to page 115 for general precautions on operand data areas.
Flags ER (A50003): For trigonometric functions, S is greater than 0900 or not BCD.
For linear extrapolation, S is not BCD when set for BCD or
the table is not readable.
Content of *DM word is not BCD when set for BCD.
EQ (A50006): ON when the result is 0.
N (A50008): Shows the status of bit 15 of the results.
The following example shows APR(142) used to calculate the sine of 30°. The
sine function is specified because C is #0000.
Address Instruction Operands
00000 LD 000000
00001 APR(142)
#0000
D00000
D00100
Source data Result
S: D00000 R: D00100
010
1
10
0
10
–1
10
–1
10
–2
10
–3
10
–4
0300 5000
Enter input data not exceeding #0900
in BCD form.
Result data has four significant
digits, fifth
and higher digits are ignored.
The result for sin(90) will be
0.9999, not 1.
The following example shows APR(142) used to calculate the cosine of 30°. The
cosine function is specified because C is #0001.
Address Instruction Operands
00000 LD 000000
00001 APR(142)
#0000
D00010
D00200
Description
Precautions
Sine Function
Cosine Function
Special Math Instructions Section 5-23
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