ECT 464

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# ECT 464 - PowerPoint PPT Presentation

ECT 464. Lecture 12 Advanced Math Instructions. Today’s Quote: It’s the little things in life that determine the big things.

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### ECT 464

Lecture 12

Today’s Quote:

It’s the little things in life that determine the big things.

His master replied, \'Well done, good and faithful servant! You have been faithful with a few things; I will put you in charge of many things. Come and share your master\'s happiness!\'

Matthew 25:21

Scale Data (SCL)
• The SCL instruction is used to produce a scaled output value that has a linear relationship.
• Source and Destination must be addresses.
• Rate is divided by 10000.
• Offset can be an address or constant
• Changes Carry, Overflow, Zero, and Sign bits
Scale with Parameters (SCP)
• The SCP instruction is used to produce a scaled output value that has a linear relationship between the input and scaled values.
• Input and Output Values must be addresses.
• Input Min and Max can be addresses or constants.
• Scaled Min and Max can be addresses or constants.
• Changes Carry, Overflow, Zero, and Sign bits
Absolute (ABS)
• The ABS instruction takes the absolute value of the Source and places it in the Destination.
• Source and Destination must be addresses.
• Changes Carry, Overflow, Zero, and Sign bits
Compute (CPT)
• The CPT instruction performs copy, arithmetic, logical, and conversion operations. You define the operation in the expression and the result is written in the destination.
• Changes Carry, Overflow, Zero, and Sign bits
• Example Expression:

SQR((N7:1 ** 2) + (N7:2 ** 2))

** means ^

Swap (SWP)
• Use the SWP instruction to swap the low and high bytes of a specified number of words in a bit, integer, or string file. The SWP instruction has 2 operands:
• Source is the word address containing the words to be swapped.
• Length is the number of words to be swapped, regardless of the file type.
Sine (SIN)
• Use the SIN instruction to take the sine of a number and store the result in the destination.
• Source must be between -205887 and 205887.
• Changes Carry, Overflow, Zero, and Sign bits
Arc Sine (ASN)
• Use the ASN instruction to take the arc sine of a number and store the result in the destination.
• Source must be between -1 and 1.
• Changes Carry, Overflow, Zero, and Sign bits
Cosine (COS)
• Use the COS instruction to take the cosine of a number and store the result in the destination.
• Source must be between -205887 and 205887.
• Changes Carry, Overflow, Zero, and Sign bits
Arc Cosine (ACS)
• Use the ACS instruction to take the arc cosine of a number and store the result in the destination.
• Source must be between -1 and 1.
• Changes Carry, Overflow, Zero, and Sign bits
Tangent (TAN)
• Use the TAN instruction to take the tangent of a number and store the result in the destination.
• Source must be between -205887 and 205887.
• Changes Carry, Overflow, Zero, and Sign bits
Arc Tangent (ATN)
• Use the ATN instruction to take the arc tangent of a number and store the result in the destination.
• Source must be between -1 and 1.
• Changes Carry, Overflow, Zero, and Sign bits
Natural Log (LN)
• Use the LN instruction to take the natural log of a number and store the result in the destination.
• Source must be between -87 and 88.
• Changes Carry, Overflow, Zero, and Sign bits
Log to the Base 10 (LOG)
• Use the LOG instruction to take the log base 10 of a number and store the result in the destination.
• Source must be between -38 and 38.
• Changes Carry, Overflow, Zero, and Sign bits
X to the Power of Y (XPY)
• Use the XPY instruction to raise a value (Source A) to a power (Source B) and store the result in the destination.
• Changes Carry, Overflow, Zero, and Sign bits
• The XPY instruction uses the following algorithm:

XPY = 2 ** (Y log2(X))