HH\Lib\Math\round
Requires the Hack Standard Library to be installed.
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This function is available as Math\round() in Facebook's www repository.
Returns the given number rounded to the specified precision
namespace HH\Lib\Math;
function round(
num $val,
int $precision = 0,
): float;
A positive precision rounds to the nearest decimal place whereas a negative precision rounds to the nearest power of ten. For example, a precision of 1 rounds to the nearest tenth whereas a precision of -1 rounds to the nearest ten.
Parameters
num $valint $precision = 0
Returns
float