Neos\Eel\Helper\MathHelper::isNaN PHP Method

MathHelper Class Documentation Datei anzeigen Open project: neos/flow-development-collection

isNaN() public method

This is equivalent to the global isNaN() function in JavaScript.
public isNaN ( mixed $x ) : boolean
$x mixed A value
return boolean TRUE if the value is not a number 
    public function isNaN($x)
    {
        return !is_numeric($x) || is_nan($x);
    }
MathHelper
abs
acos
acosh
allowsCallOfMethod
asin
asinh
atan
atan2
atanh
cbrt
ceil
cos
cosh
exp
expm1
floor
getE
getLN10
getLN2
getLOG10E
getLOG2E
getPI
getSQRT1_2
getSQRT2
hypot
isFinite
isInfinite
isNaN
log
log10
log1p
log2
max
min
pow
random
randomInt
round
sign
sin
sinh
sqrt
tan
tanh
trunc