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Examples
Sine Function The following example demonstrates the use of the APR(69) sine function to cal-
culate the sine of 30°. The sine function is specified when C is #0000.
Input data, x Result data
S: DM 0000 D: DM 0100
010
1
10
0
10
–1
10
–1
10
–2
10
–3
10
–4
0300 5000
APR(69)
#0000
DM 0000
DM 0100
00000
Enter input data not
exceeding #0900 in BCD.
Result data has four significant
digits, fifth and higher digits are
ignored. The result for sin(90)
will be 0.9999, not 1.
Address Instruction Operands
00000 LD 00000
00001 APR(69)
# 0000
DM 0000
DM 0100
Cosine Function The following example demonstrates the use of the APR(69) cosine function to
calculate the cosine of 30°. The cosine function is specified when C is #0001.
Input data, x Result data
S: DM 0010 D: DM 0110
010
1
10
0
10
–1
10
–1
10
–2
10
–3
10
–4
0300 8660
APR(69)
#0001
DM 0010
DM 0110
00000
Enter input data not
exceeding #0900 in BCD.
Result data has four significant
digits, fifth and higher digits are
ignored. The result for cos(0)
will be 0.9999, not 1.
Address Instruction Operands
00000 LD 00000
00001 APR(69)
# 0001
DM 0010
DM 0110
Linear Approximation APR(69) linear approximation is specified when C is a memory address. Word C
is the first word of the continuous block of memory containing the linear approxi-
mation data.
The content of word C specifies the number of line segments in the approxima-
tion, and whether the input and output are in BCD or BIN form. Bits 00 to 07 con-
tain the number of line segments less 1, m–1, as binary data. Bits 14 and 15 de-
termine, respectively, the output and input forms: 0 specifies BCD and 1 speci-
fies BIN.
15 14 13 Not used. 07 06 05 04 03 02 01 00
Source data form
1 (ON): f(x)=f(X
m
–S)
0 (OFF): f(x)=f(S)
Output form
Input form
Number of coordinates
minus one (m–1)
C:
Special Math Instructions Section 5-21