Chapter 6 Applied Instructions
6-335
API Instruction code Operand
Function
1507 FCOSH P
S, D
Hyperbolic cosine of the
floating-point number
Device
X Y M S T C HC D L SM SR E PR K 16# “$” DF
Pulse instruction
16-bit instruction (5-6 steps)
32-bit instruction
Symbol:
S
：
Source value Double word
D
：
Hyperbolic cosine value Double word
Explanation:
1. Hyperbolic cosine value=(e
s
+e
-s
)/2.
2. If the absolute value of the conversion result is larger than the value which can be represented
by the maximum floating-point number, the value in D is 16#7F800000, and SM602 is ON.
3. If the absolute value of the conversion result is less than the value which can be represented
by the minimum floating-point number, the value in D is 16#FF800000, and SM601 is ON.
4. If the conversion result is 0, SM600 is ON.
Example:
1. When X0.0 is ON, the hyperbolic cosine of the floating-point number in (D1, D0) is stored in
(D11, D10). The hyperbolic cosine value in (D11, D10) is the floating-point number.
Single-precision
floating-point number
Hyperbolic cosine value
D1 D0
D11 D10
S
D
2. If the absolute value of the conversion result is larger than the value which can be represented
by the maximum floating-point number, SM602 is ON.
3. If the absolute value of the conversion result is less than the value which can be represented
by the minimum floating-point number, SM601 is ON.
4. If the conversion result is 0, SM600 is ON.
Additional remark:
If the value in S exceeds the range of values which can be represented by the floating-point
numbers, the instruction is not executed, SM0 is ON, and the error code in SR0 is 16#2013.
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