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lab-1-intro-to-git-c-and-msp430-Russty32280

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Math Library for MSP430

This library is processor ambiguous. This library is meant to be used as an abstraction layer in systems which recieve math operations from a communication such as UART.

Dependencies

This library only depends on having the processor specific header file included in the main file. An example of this is MSP430.h for Texas Instruments MSP430 based processors.

Usage

After including the math.h and math.c files in the same working directory as your project, you need to simple call the following function to perform the require operation:

Math(int1, int2, operator);

Valid Inputs

int1, int2

16-bit signed integers

operator

char which is valid for the following values [’+’, ‘-‘, ‘*’, ‘/’, ‘%’]. Math() will return Null if this input it invalid.

Functions

Add (char = ‘+’)

int1 will be added to int2 and function will return the sum as a signed integer.

Example (10 + 20)

Math( 10, 20, '+');

Subtract (char = ‘-‘)

int 2 will be subtracted from int 1 and function will return the difference as a signed integer.

Example (10 - 20)

Math( 10, 20, '-');

Multiply (char = ‘*’)

int 1 will be multiplied by int2 and function will return the difference as a signed integer.

Example (10 * 20)

Math( 10, 20, '*');

Divide (char = ‘/’)

int1 will be integer divided by int2. This will only return the quotient as an integer.

Example (10 / 2)

Math( 10, 2, '/');

Known Errors

Currently there is no method of returning whether or not the returned value is signed. This means that operations such as “3-5” could be interpreted as +2 or -2.

Tasks