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Summery Summery
Subtract two field elements.
Syntax Syntax
Description Description
h = f – g
Preconditions: |f| bounded by 1.1_2^25,1.1_2^24,1.1_2^25,1.1_2^24,etc. |g| bounded by 1.1_2^25,1.1_2^24,1.1_2^25,1.1_2^24,etc.
Postconditions: |h| bounded by 1.1_2^26,1.1_2^25,1.1_2^26,1.1_2^25,etc.
Parameters Parameters
- $f
-
(Required)
- $g
-
(Required)
Return Return
Source Source
File: wp-includes/sodium_compat/src/Core32/Curve25519.php
public static function fe_sub(ParagonIE_Sodium_Core32_Curve25519_Fe $f, ParagonIE_Sodium_Core32_Curve25519_Fe $g)
{
return ParagonIE_Sodium_Core32_Curve25519_Fe::fromArray(
array(
$f[0]->subInt32($g[0]),
$f[1]->subInt32($g[1]),
$f[2]->subInt32($g[2]),
$f[3]->subInt32($g[3]),
$f[4]->subInt32($g[4]),
$f[5]->subInt32($g[5]),
$f[6]->subInt32($g[6]),
$f[7]->subInt32($g[7]),
$f[8]->subInt32($g[8]),
$f[9]->subInt32($g[9])
)
);
}