Exponents and logarithms Routines
exp
public static exp($x) : CArray
Calculate the exponential of all elements.
Parameters
CArray|Array
$x Input array.
Returns
CArray
Output array, element-wise exponential of $x
.
expm1
public static expm1($x) : CArray
Calculate
exp($x) - 1
for all elements in the array.
Parameters
CArray|Array
$x Input array.
Returns
CArray
Output array, element-wise exp($x)-1
of $x
.
exp2
public static exp2($x) : CArray
Calculate
2**p
for allp
(value) in the input array.
Parameters
CArray|Array
$x Input array.
Returns
CArray
Output array, element-wise 2**p
of $x
.
log
public static log($x) : CArray
Natural logarithm, element-wise.
Parameters
CArray|Array
$x Input array.
Returns
CArray
Output array, element-wise natural logarithm of $x
.
log10
public static log10($x) : CArray
Return the base 10 logarithm of
$x
, element-wise.
Parameters
CArray|Array
$x Input array.
Returns
CArray
Output array, element-wise base 10 logarithm of $x
.
log2
public static log2($x) : CArray
Base-2 logarithm of
$x
.
Parameters
CArray|Array
$x Input array.
Returns
CArray
Output array, element-wise base 2 logarithm of $x
.
log1p
public static log1p($x) : CArray
Calculates
log(1 + $x)
of$x
Parameters
CArray|Array
$x Input array.
Returns
CArray
Output array, element-wise log(1 + $x)
of $x
.