# Vector Division

## Function Prototype

/* Vector Division */
/* Type: simple */
/* Input arrays: 2    Options: 0    Output arrays: 1 */
/* Inputs: real, real */
/* Options: none */
/* Outputs: div */
int ti_div_start(TI_REAL const *options);
int ti_div(int size,
TI_REAL const *const *inputs,
TI_REAL const *options,
TI_REAL *const *outputs);

## Description

This documentation is still a work in progress. It has omissions, and it probably has errors too. If you see any issues, or have any general feedback, please get in touch.

Div simply takes two input arrays and divides them.

$$div_{t} = \frac{a_{t}}{b_{t}}$$

This is sometimes useful as a building block to more complex functions.

## Example Usage

### Calling From C

/* Example usage of Vector Division */
/* Assuming that 'input1' and 'input2' are pre-loaded arrays of size 'in_size'. */
TI_REAL *inputs[] = {input1, input2};
TI_REAL options[] = {}; /* No options */
TI_REAL *outputs[1]; /* div */

/* Determine how large the output size is for our options. */
const int out_size = in_size - ti_div_start(options);

/* Allocate memory for output. */
outputs[0] = malloc(sizeof(TI_REAL) * out_size); assert(outputs[0] != 0); /* div */

/* Run the actual calculation. */
const int ret = ti_div(in_size, inputs, options, outputs);
assert(ret == TI_OKAY);


### Calling From Lua (with Tulip Chart bindings)

-- Example usage of Vector Division
div = ti.div(input1, input2)


## Example Calculation

dateinputinput2div
2005-11-0181.5981.851.00
2005-11-0281.0681.201.00
2005-11-0382.8781.551.02
2005-11-0483.0082.911.00
2005-11-0783.6183.101.01
2005-11-0883.1583.411.00
2005-11-0982.8482.711.00
2005-11-1083.9982.701.02
2005-11-1184.5584.201.00
2005-11-1484.3684.251.00
2005-11-1585.5384.031.02
2005-11-1686.5485.451.01
2005-11-1786.8986.181.01
2005-11-1887.7788.001.00
2005-11-2187.2987.601.00

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