ParagonIE_Sodium_Core_Curve25519_Fe::__construct( int $e0 = 0, int $e1 = 0, int $e2 = 0, int $e3 = 0, int $e4 = 0, int $e5 = 0, int $e6 = 0, int $e7 = 0, int $e8 = 0, int $e9 = 0 )

Compatibility

Present in 3 of the 5 tracked releases, and compiles on PHP 7.4 through 8.6-dev.

Parameters

$e0intoptional

Default: 0

$e1intoptional

Default: 0

$e2intoptional

Default: 0

$e3intoptional

Default: 0

$e4intoptional

Default: 0

$e5intoptional

Default: 0

$e6intoptional

Default: 0

$e7intoptional

Default: 0

$e8intoptional

Default: 0

$e9intoptional

Default: 0

Performance profile

How much work a call to ParagonIE_Sodium_Core_Curve25519_Fe::__construct() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class

Trivial

Touches nothing outside its own arguments.

Scaling

Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions

31

Executed per call on PHP 8.5. The body compiles to 31.

Plugin surface

None

Nothing here hands control to plugin code.

Called by

17

17 places in core call this, so the cost is paid more often than your own code shows.

What one call costs · 1 distinct outcome

One number would be a lie: the work depends on which branch runs. These are every distinct cost ParagonIE_Sodium_Core_Curve25519_Fe::__construct() can have, taken from its control-flow graph on PHP 8.5.

Used by · 17

• ParagonIE_Sodium_Core_Curve25519::fe_0()Get a field element of size 10 with a value of 0
• ParagonIE_Sodium_Core_Curve25519::fe_1()Get a field element of size 10 with a value of 1
• ParagonIE_Sodium_Core_Curve25519::fe_add()Add two field elements.
• ParagonIE_Sodium_Core_Curve25519::fe_cmov()Constant-time conditional move.
• ParagonIE_Sodium_Core_Curve25519::fe_frombytes()Give: 32-byte string.
• ParagonIE_Sodium_Core_Curve25519::fe_mul()Multiply two field elements
• ParagonIE_Sodium_Core_Curve25519::fe_neg()Get the negative values for each piece of the field element.
• ParagonIE_Sodium_Core_Curve25519::fe_sq()Square a field element
• ParagonIE_Sodium_Core_Curve25519::fe_sq2()Square and double a field element
• ParagonIE_Sodium_Core_Curve25519::fe_sub()Subtract two field elements.
• ParagonIE_Sodium_Core_Curve25519_Fe::fromArray()
• ParagonIE_Sodium_Core_Curve25519_Ge_Cached::__construct()ParagonIE_Sodium_Core_Curve25519_Ge_Cached constructor.

Source code

View on Trac ↗View on GitHub ↗

76    public function __construct(77        $e0 = 0,78        $e1 = 0,79        $e2 = 0,80        $e3 = 0,81        $e4 = 0,82        $e5 = 0,83        $e6 = 0,84        $e7 = 0,85        $e8 = 0,86        $e9 = 087    ) {88        $this->e0 = $e0;89        $this->e1 = $e1;90        $this->e2 = $e2;91        $this->e3 = $e3;92        $this->e4 = $e4;93        $this->e5 = $e5;94        $this->e6 = $e6;95        $this->e7 = $e7;96        $this->e8 = $e8;97        $this->e9 = $e9;98    }

Changelog

Unchanged from 6.9.7 through 7.1.0.

1. 6.9.7
2. 7.0.4
3. 7.1.0

Signature, return type and hooks compared across 3 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/sodium_compat/src/Core/Curve25519/Fe.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

Something wrong on this page? Report it and it gets fixed in the next regeneration.