DeveloperMemos

# Using abs in Deno for Math

Mathematical computations are an essential part of programming and Deno provides a set of built-in functions that make it easy to perform mathematical operations. One of these functions is `abs()`, which returns the absolute value of a number.

The absolute value of a number is its distance from zero, regardless of whether it's positive or negative. For example, the absolute value of 5 is 5, and the absolute value of -5 is also 5.

To use the `abs()` function in Deno, you simply need to pass in a number as an argument. Here's an example:

```.css-dybovu{background-color:rgba(107,70,193,0.2);border:none;color:var(--theme-ui-colors-gray-2);cursor:pointer;font-size:14px;font-family:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";letter-spacing:0.025rem;-webkit-transition:default;transition:default;position:absolute;top:0;right:0;z-index:1;border-radius:0 0 0 0.25rem;padding:0.25rem 0.6rem;}@media screen and (min-width: 640px){.css-dybovu{font-size:14px;}}@media screen and (min-width: 768px){.css-dybovu{font-size:16px;}}.css-dybovu[disabled]{cursor:not-allowed;}.css-dybovu:not([disabled]):hover{background-color:var(--theme-ui-colors-primary);color:var(--theme-ui-colors-white);}```1const x = -10;2const y = 5;3
4console.log(Math.abs(x)); // Output: 105console.log(Math.abs(y)); // Output: 5``````

In this example, we have defined two variables `x` and `y` with the values of -10 and 5 respectively. We then call the `abs()` function on each variable, which returns the absolute value of the number.

You can also use the `abs()` function with floating-point numbers. Here's an example:

``````1const a = -1.2345;2const b = 5.6789;3
4console.log(Math.abs(a)); // Output: 1.23455console.log(Math.abs(b)); // Output: 5.6789``````

In this example, we have defined two variables `a` and `b` with the values of -1.2345 and 5.6789 respectively. We then call the `abs()` function on each variable, which returns the absolute value of the floating-point number.

It's important to note that the `abs()` function does not modify the original value passed as an argument. Instead, it returns a new value with its magnitude converted to a positive value.

In conclusion, the `abs()` function in Deno is a useful tool for computing the absolute value of numbers, whether they are integers or floating-point numbers. By using this function, you can simplify your code and avoid having to write custom logic to compute absolute values.