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decimal

Pembungkus/shim ekstensi BC Math berorientasi objek.

decimal menawarkan implementasi aritmatika dasar presisi arbitrer yang lancar dan tanpa kewarganegaraan, menggunakan BC Math jika tersedia.

Anda dapat mengetahui lebih lanjut tentang presisi floating point di sini.

Contoh:

decimal Number; use PrestaShop decimal OperationRounding; echo (new decimal Number('0.1')) ->plus(new decimal Number('0.7')) ->times(new decimal Number('10')) ->round(0, Rounding::ROUND_FLOOR) // echoes '8'">
 use PrestaShop  decimal  decimal Number ;
use PrestaShop  decimal  Operation  Rounding ;

echo ( new decimal Number ( ' 0.1 ' ))
    -> plus ( new decimal Number ( ' 0.7 ' ))
    -> times ( new decimal Number ( ' 10 ' ))
    -> round ( 0 , Rounding:: ROUND_FLOOR )
  
// echoes '8'

Memasang

Melalui Komposer 

$ composer require prestashop/ decimal

Referensi penggunaan

Tautan cepat:

  • Instansiasi
  • Tambahan
  • Pengurangan
  • Perkalian
  • Divisi
  • Perbandingan
  • Memperbaiki presisi
  • Pembulatan
  • Pergeseran titik
  • Metode yang berguna

Instansiasi

Membuat angka decimal baru. 

 public __construct ( string $ number [, int $ exponent = null ] ): decimal Number

Ada dua cara untuk membuat instance Angka decimal decimal :

decimal Number('123.456'); echo $number; // echoes '123.456'">
 // create a number from string
$ number = new PrestaShop  decimal  decimal Number ( ' 123.456 ' );
echo $ number ; // echoes '123.456'
decimal Number('123456', -3); echo $number; // echoes '123.456'">
 // exponent notation
$ number = new PrestaShop  decimal  decimal Number ( ' 123456 ' , - 3 );
echo $ number ; // echoes '123.456'

Tambahan

Mengembalikan hasil terhitung dari penambahan nomor lain ke nomor saat ini.

decimal Number $addend ): decimal Number">
 public decimal Number:: plus ( decimal Number $ addend ): decimal Number

Contoh:

decimal Number('123.456'); $b = new PrestaShop decimal decimal Number('654.321'); echo $a->plus($b); // echoes '777.777'">
 $ a = new PrestaShop  decimal  decimal Number ( ' 123.456 ' );
$ b = new PrestaShop  decimal  decimal Number ( ' 654.321 ' );

echo $ a -> plus ( $ b ); // echoes '777.777'

Pengurangan

Mengembalikan hasil penghitungan pengurangan angka lain ke angka saat ini.

decimal Number $subtrahend ): decimal Number">
 public decimal Number:: minus ( decimal Number $ subtrahend ): decimal Number

Contoh:

decimal Number('777.777'); $b = new PrestaShop decimal decimal Number('654.321'); echo $a->minus($b); // echoes '123.456'">
 $ a = new PrestaShop  decimal  decimal Number ( ' 777.777 ' );
$ b = new PrestaShop  decimal  decimal Number ( ' 654.321 ' );

echo $ a -> minus ( $ b ); // echoes '123.456'

Perkalian

Mengembalikan hasil yang dihitung dari mengalikan angka saat ini dengan angka lainnya.

decimal Number $factor ): decimal Number">
 public decimal Number:: times ( decimal Number $ factor ): decimal Number

Contoh:

decimal Number('777.777'); $b = new PrestaShop decimal decimal Number('654.321'); echo $a->times($b); // echoes '508915.824417'">
 $ a = new PrestaShop  decimal  decimal Number ( ' 777.777 ' );
$ b = new PrestaShop  decimal  decimal Number ( ' 654.321 ' );

echo $ a -> times ( $ b ); // echoes '508915.824417'

Divisi

Mengembalikan hasil penghitungan pembagian angka saat ini dengan angka lain, hingga sejumlah posisi decimal tertentu (6 secara default).

decimal Number $divisor [, int $precision = OperationDivision::DEFAULT_PRECISION ] )">
 public decimal Number:: dividedBy ( decimal Number $ divisor [, int $ precision = Operation Division:: DEFAULT_PRECISION ] )

Contoh:

decimal Number('777.777'); $b = new PrestaShop decimal decimal Number('654.321'); echo $a->dividedBy($b, 0); // echoes '1' echo $a->dividedBy($b, 5); // echoes '1.18867' echo $a->dividedBy($b, 10); // echoes '1.1886780341' echo $a->dividedBy($b, 15); // echoes '1.188678034175886'">
 $ a = new PrestaShop  decimal  decimal Number ( ' 777.777 ' );
$ b = new PrestaShop  decimal  decimal Number ( ' 654.321 ' );

echo $ a -> dividedBy ( $ b , 0 );  // echoes '1'
echo $ a -> dividedBy ( $ b , 5 );  // echoes '1.18867'
echo $ a -> dividedBy ( $ b , 10 ); // echoes '1.1886780341'
echo $ a -> dividedBy ( $ b , 15 ); // echoes '1.188678034175886'

Perbandingan

Mengembalikan hasil pernyataan perbandingan.

decimal Number('777.777'); $b = new PrestaShop decimal decimal Number('654.321'); $a->equals($b); // returns false $a->isLowerThan($b); // returns false $a->isLowerOrEqualThan($b); // returns false $a->isGreaterThan($b); // returns true $a->isGreaterOrEqualThan($b); // returns true // shortcut methods $a->equalsZero(); // returns false $a->isLowerThanZero(); // returns false $a->isLowerOrEqualThanZero(); // returns false $a->isGreaterThanZero(); // returns true $a->isGreaterOrEqualThanZero(); // returns true">
 $ a = new PrestaShop  decimal  decimal Number ( ' 777.777 ' );
$ b = new PrestaShop  decimal  decimal Number ( ' 654.321 ' );

$ a -> equals ( $ b );                // returns false
$ a -> isLowerThan ( $ b );           // returns false
$ a -> isLowerOrEqualThan ( $ b );    // returns false
$ a -> isGreaterThan ( $ b );         // returns true
$ a -> isGreaterOrEqualThan ( $ b );  // returns true

// shortcut methods
$ a -> equalsZero ();               // returns false
$ a -> isLowerThanZero ();          // returns false 
$ a -> isLowerOrEqualThanZero ();   // returns false
$ a -> isGreaterThanZero ();        // returns true
$ a -> isGreaterOrEqualThanZero (); // returns true

Memperbaiki presisi

Mengembalikan angka sebagai string, opsional dibulatkan, dengan jumlah posisi decimal yang tepat. 

 public decimal Number:: toPrecision ( int $ precision [, string $ roundingMode = Rounding:: ROUND_TRUNCATE ] ): string

Contoh:

decimal Number('123.456'); $a = new PrestaShop decimal decimal Number('-123.456'); // truncate / pad $a->toPrecision(0); // '123' $a->toPrecision(1); // '123.4' $a->toPrecision(2); // '123.45' $a->toPrecision(3); // '123.456' $a->toPrecision(4); // '123.4560' $b->toPrecision(0); // '-123' $b->toPrecision(1); // '-123.4' $b->toPrecision(2); // '-123.45' $b->toPrecision(3); // '-123.456' $b->toPrecision(4); // '-123.4560' // ceil (round up) $a->toPrecision(0, PrestaShop decimal OperationRounding::ROUND_CEIL); // '124' $a->toPrecision(1, PrestaShop decimal OperationRounding::ROUND_CEIL); // '123.5' $a->toPrecision(2, PrestaShop decimal OperationRounding::ROUND_CEIL); // '123.46' $b->toPrecision(0, PrestaShop decimal OperationRounding::ROUND_CEIL); // '-122' $b->toPrecision(1, PrestaShop decimal OperationRounding::ROUND_CEIL); // '-123.3' $b->toPrecision(2, PrestaShop decimal OperationRounding::ROUND_CEIL); // '-123.44' // floor (round down) $a->toPrecision(0, PrestaShop decimal OperationRounding::ROUND_FLOOR); // '123' $a->toPrecision(1, PrestaShop decimal OperationRounding::ROUND_FLOOR); // '123.4' $a->toPrecision(2, PrestaShop decimal OperationRounding::ROUND_FLOOR); // '123.45' $b->toPrecision(0, PrestaShop decimal OperationRounding::ROUND_FLOOR); // '-124' $b->toPrecision(1, PrestaShop decimal OperationRounding::ROUND_FLOOR); // '-123.5' $b->toPrecision(2, PrestaShop decimal OperationRounding::ROUND_FLOOR); // '-123.46' // half-up (symmetric half-up) $a->toPrecision(0, PrestaShop decimal OperationRounding::ROUND_HALF_UP); // '123' $a->toPrecision(1, PrestaShop decimal OperationRounding::ROUND_HALF_UP); // '123.5' $a->toPrecision(2, PrestaShop decimal OperationRounding::ROUND_HALF_UP); // '123.46' $b->toPrecision(0, PrestaShop decimal OperationRounding::ROUND_HALF_UP); // '-123' $b->toPrecision(1, PrestaShop decimal OperationRounding::ROUND_HALF_UP); // '-123.5' $b->toPrecision(2, PrestaShop decimal OperationRounding::ROUND_HALF_UP); // '-123.46' // half-down (symmetric half-down) $a->toPrecision(0, PrestaShop decimal OperationRounding::ROUND_HALF_DOWN); // '123' $a->toPrecision(1, PrestaShop decimal OperationRounding::ROUND_HALF_DOWN); // '123.4' $a->toPrecision(2, PrestaShop decimal OperationRounding::ROUND_HALF_DOWN); // '123.46' $a->toPrecision(0, PrestaShop decimal OperationRounding::ROUND_HALF_DOWN); // '-123' $a->toPrecision(1, PrestaShop decimal OperationRounding::ROUND_HALF_DOWN); // '-123.4' $a->toPrecision(2, PrestaShop decimal OperationRounding::ROUND_HALF_DOWN); // '-123.46' // half-even $a->toPrecision(0, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '123' $a->toPrecision(1, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '123.4' $a->toPrecision(2, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '123.46' $a->toPrecision(0, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '-123' $a->toPrecision(1, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '-123.4' $a->toPrecision(2, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '-123.46' $a = new PrestaShop decimal decimal Number('1.1525354556575859505'); $a->toPrecision(0, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '1' $a->toPrecision(1, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '1.2' $a->toPrecision(2, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '1.15' $a->toPrecision(3, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '1.152' $a->toPrecision(4, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '1.1525' $a->toPrecision(5, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '1.15255' $a->toPrecision(6, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '1.152535' $a->toPrecision(7, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '1.1525354' $a->toPrecision(8, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '1.15253546' $a->toPrecision(9, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '1.152535456' $a->toPrecision(10, PrestaShop decimal OperationRounding::ROUND_HALF_EVEN); // '1.1525354556'">
 $ a = new PrestaShop  decimal  decimal Number ( ' 123.456 ' );
$ a = new PrestaShop  decimal  decimal Number ( ' -123.456 ' );

// truncate / pad
$ a -> toPrecision ( 0 ); // '123'
$ a -> toPrecision ( 1 ); // '123.4'
$ a -> toPrecision ( 2 ); // '123.45'
$ a -> toPrecision ( 3 ); // '123.456'
$ a -> toPrecision ( 4 ); // '123.4560'
$ b -> toPrecision ( 0 ); // '-123'
$ b -> toPrecision ( 1 ); // '-123.4'
$ b -> toPrecision ( 2 ); // '-123.45'
$ b -> toPrecision ( 3 ); // '-123.456'
$ b -> toPrecision ( 4 ); // '-123.4560'

// ceil (round up)
$ a -> toPrecision ( 0 , PrestaShop  decimal  Operation Rounding:: ROUND_CEIL ); // '124'
$ a -> toPrecision ( 1 , PrestaShop  decimal  Operation Rounding:: ROUND_CEIL ); // '123.5'
$ a -> toPrecision ( 2 , PrestaShop  decimal  Operation Rounding:: ROUND_CEIL ); // '123.46'
$ b -> toPrecision ( 0 , PrestaShop  decimal  Operation Rounding:: ROUND_CEIL ); // '-122'
$ b -> toPrecision ( 1 , PrestaShop  decimal  Operation Rounding:: ROUND_CEIL ); // '-123.3'
$ b -> toPrecision ( 2 , PrestaShop  decimal  Operation Rounding:: ROUND_CEIL ); // '-123.44'

// floor (round down)
$ a -> toPrecision ( 0 , PrestaShop  decimal  Operation Rounding:: ROUND_FLOOR ); // '123'
$ a -> toPrecision ( 1 , PrestaShop  decimal  Operation Rounding:: ROUND_FLOOR ); // '123.4'
$ a -> toPrecision ( 2 , PrestaShop  decimal  Operation Rounding:: ROUND_FLOOR ); // '123.45'
$ b -> toPrecision ( 0 , PrestaShop  decimal  Operation Rounding:: ROUND_FLOOR ); // '-124'
$ b -> toPrecision ( 1 , PrestaShop  decimal  Operation Rounding:: ROUND_FLOOR ); // '-123.5'
$ b -> toPrecision ( 2 , PrestaShop  decimal  Operation Rounding:: ROUND_FLOOR ); // '-123.46'

// half-up (symmetric half-up)
$ a -> toPrecision ( 0 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_UP ); // '123'
$ a -> toPrecision ( 1 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_UP ); // '123.5'
$ a -> toPrecision ( 2 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_UP ); // '123.46'
$ b -> toPrecision ( 0 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_UP ); // '-123'
$ b -> toPrecision ( 1 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_UP ); // '-123.5'
$ b -> toPrecision ( 2 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_UP ); // '-123.46'

// half-down (symmetric half-down)
$ a -> toPrecision ( 0 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_DOWN ); // '123'
$ a -> toPrecision ( 1 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_DOWN ); // '123.4'
$ a -> toPrecision ( 2 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_DOWN ); // '123.46'
$ a -> toPrecision ( 0 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_DOWN ); // '-123'
$ a -> toPrecision ( 1 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_DOWN ); // '-123.4'
$ a -> toPrecision ( 2 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_DOWN ); // '-123.46'

// half-even
$ a -> toPrecision ( 0 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN ); // '123'
$ a -> toPrecision ( 1 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN ); // '123.4'
$ a -> toPrecision ( 2 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN ); // '123.46'
$ a -> toPrecision ( 0 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN ); // '-123'
$ a -> toPrecision ( 1 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN ); // '-123.4'
$ a -> toPrecision ( 2 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN ); // '-123.46'

$ a = new PrestaShop  decimal  decimal Number ( ' 1.1525354556575859505 ' );
$ a -> toPrecision ( 0 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN );  // '1'
$ a -> toPrecision ( 1 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN );  // '1.2'
$ a -> toPrecision ( 2 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN );  // '1.15'
$ a -> toPrecision ( 3 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN );  // '1.152'
$ a -> toPrecision ( 4 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN );  // '1.1525'
$ a -> toPrecision ( 5 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN );  // '1.15255'
$ a -> toPrecision ( 6 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN );  // '1.152535'
$ a -> toPrecision ( 7 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN );  // '1.1525354'
$ a -> toPrecision ( 8 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN );  // '1.15253546'
$ a -> toPrecision ( 9 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN );  // '1.152535456'
$ a -> toPrecision ( 10 , PrestaShop  decimal  Operation Rounding:: ROUND_HALF_EVEN ); // '1.1525354556'

Pembulatan

Pembulatan berperilaku seperti toPrecision , tetapi memberikan "hingga" sejumlah posisi decimal tertentu (tidak menambahkan angka nol di belakangnya).

decimal s [, string $roundingMode = Rounding::ROUND_TRUNCATE ] ): string">
 public decimal Number:: round ( int $ max decimal s [, string $ roundingMode = Rounding:: ROUND_TRUNCATE ] ): string

Contoh:

decimal Number('123.456'); $a = new PrestaShop decimal decimal Number('-123.456'); // truncate / pad $a->round(0); // '123' $a->round(1); // '123.4' $a->round(2); // '123.45' $a->round(3); // '123.456' $a->round(4); // '123.456' $b->round(0); // '-123' $b->round(1); // '-123.4' $b->round(2); // '-123.45' $b->round(3); // '-123.456' $b->round(4); // '-123.456'">
 $ a = new PrestaShop  decimal  decimal Number ( ' 123.456 ' );
$ a = new PrestaShop  decimal  decimal Number ( ' -123.456 ' );

// truncate / pad
$ a -> round ( 0 ); // '123'
$ a -> round ( 1 ); // '123.4'
$ a -> round ( 2 ); // '123.45'
$ a -> round ( 3 ); // '123.456'
$ a -> round ( 4 ); // '123.456'
$ b -> round ( 0 ); // '-123'
$ b -> round ( 1 ); // '-123.4'
$ b -> round ( 2 ); // '-123.45'
$ b -> round ( 3 ); // '-123.456'
$ b -> round ( 4 ); // '-123.456'

Pergeseran titik

Membuat salinan baru dari angka ini dikalikan dengan 10^eksponen

decimal Number">
 public decimal Number:: toMagnitude ( int $ exponent ): decimal Number

Contoh:

decimal Number('123.456789'); // shift 3 digits to the left $a->toMagnitude(-3); // 0.123456789 // shift 3 digits to the right $a->toMagnitude(3); // 123456.789">
 $ a = new PrestaShop  decimal  decimal Number ( ' 123.456789 ' );

// shift 3 digits to the left
$ a -> toMagnitude (- 3 ); // 0.123456789

// shift 3 digits to the right
$ a -> toMagnitude ( 3 ); // 123456.789

Metode yang berguna

decimal Number('123.45'); $number->getIntegerPart(); // '123' $number->getFractionalPart(); // '45' $number->getPrecision(); // '2' (number of decimal s) $number->getSign(); // '' ('-' if the number was negative) $number->getExponent(); // '2' (always positive) $number->getCoefficient(); // '123456' $number->isPositive(); // true $number->isNegative(); // false $number->invert(); // new decimal decimal Number('-123.45')">
 $ number = new PrestaShop  decimal  decimal Number ( ' 123.45 ' );
$ number -> getIntegerPart ();    // '123'
$ number -> getFractionalPart (); // '45'
$ number -> getPrecision ();      // '2' (number of decimal s)
$ number -> getSign ();           // '' ('-' if the number was negative)
$ number -> getExponent ();       // '2' (always positive)
$ number -> getCoefficient ();    // '123456'
$ number -> isPositive ();        // true
$ number -> isNegative ();        // false
$ number -> invert ();            // new decimal  decimal Number('-123.45')

Pengujian 

$ composer install
$ vendor/bin/phpunit

Berkontribusi

Silakan lihat KONTRIBUSI untuk rinciannya.

Kredit

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Lisensi

Lisensi MIT (MIT). Silakan lihat File Lisensi untuk informasi lebih lanjut.

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