/**
* @param integer $days
*
* @return Instant
*/
public function minusDays($days)
{
$days = Cast::toInteger($days);
return $this->plusDays(-$days);
}
/**
* Returns a new Period with each value multiplied by the given scalar.
*
* @param integer $scalar
*
* @return Period
*/
public function multipliedBy($scalar)
{
$scalar = Cast::toInteger($scalar);
if ($scalar === 1) {
return $this;
}
return new Period($this->years * $scalar, $this->months * $scalar, $this->days * $scalar);
}
/**
* Returns a copy of this LocalDateTime with the specified period in nanoseconds subtracted.
*
* @param integer $nanos
*
* @return LocalDateTime
*/
public function minusNanos($nanos)
{
$nanos = Cast::toInteger($nanos);
if ($nanos === 0) {
return $this;
}
return $this->plusWithOverflow(0, 0, 0, $nanos, -1);
}
/**
* Returns a copy of this YearMonth with the specified period in years added.
*
* @param integer $years
*
* @return YearMonth
*/
public function plusYears($years)
{
$years = Cast::toInteger($years);
if ($years === 0) {
return $this;
}
return $this->withYear($this->year + $years);
}
/**
* Returns a copy of this LocalDate with the specified period in days added.
*
* @param integer $days
*
* @return LocalDate
*/
public function plusDays($days)
{
$days = Cast::toInteger($days);
if ($days === 0) {
return $this;
}
return LocalDate::ofEpochDay($this->toEpochDay() + $days);
}
/**
* Returns a copy of this MonthDay with the day-of-month altered.
*
* If the day-of-month is invalid for the month, an exception is thrown.
*
* @param integer $day
*
* @return MonthDay
*
* @throws DateTimeException If the day-of-month is invalid for the month.
*/
public function withDay($day)
{
$day = Cast::toInteger($day);
if ($day === $this->day) {
return $this;
}
Field\DayOfMonth::check($day, $this->month);
return new MonthDay($this->month, $day);
}
/**
* Obtains an instance of `TimeZoneOffset` specifying the total offset in seconds.
*
* The offset must be in the range `-18:00` to `+18:00`, which corresponds to -64800 to +64800.
*
* @param integer $totalSeconds The total offset in seconds.
*
* @return TimeZoneOffset
*
* @throws DateTimeException
*/
public static function ofTotalSeconds($totalSeconds)
{
$totalSeconds = Cast::toInteger($totalSeconds);
Field\TimeZoneOffsetTotalSeconds::check($totalSeconds);
return new TimeZoneOffset($totalSeconds);
}
/**
* Returns a copy of this LocalTime with the specified period in nanoseconds added.
*
* @param integer $nanos The seconds to add, may be negative.
*
* @return LocalTime A LocalTime based on this time with the nanoseconds added.
*/
public function plusNanos($nanos)
{
$nanos = Cast::toInteger($nanos);
if ($nanos === 0) {
return $this;
}
$divBase = Math::floorDiv($this->nano, LocalTime::NANOS_PER_SECOND);
$modBase = Math::floorMod($this->nano, LocalTime::NANOS_PER_SECOND);
$divPlus = Math::floorDiv($nanos, LocalTime::NANOS_PER_SECOND);
$modPlus = Math::floorMod($nanos, LocalTime::NANOS_PER_SECOND);
$diffSeconds = $divBase + $divPlus;
$nano = $modBase + $modPlus;
if ($nano >= LocalTime::NANOS_PER_SECOND) {
$nano -= LocalTime::NANOS_PER_SECOND;
$diffSeconds++;
}
return $this->withNano($nano)->plusSeconds($diffSeconds);
}
/**
* Returns a copy of this Duration divided by the given value.
*
* If this yields an inexact result, the result will be rounded down.
*
* @param integer $divisor
*
* @return \Brick\DateTime\Duration
*/
public function dividedBy($divisor)
{
$divisor = Cast::toInteger($divisor);
if ($divisor === 0) {
throw new DateTimeException('Cannot divide a Duration by zero.');
}
if ($divisor === 1) {
return $this;
}
$seconds = $this->seconds;
$nanos = $this->nanos;
if ($seconds < 0 && $nanos !== 0) {
$seconds++;
$nanos -= LocalTime::NANOS_PER_SECOND;
}
$remainder = $seconds % $divisor;
$seconds = intdiv($seconds, $divisor);
$r1 = $nanos % $divisor;
$nanos = intdiv($nanos, $divisor);
$r2 = LocalTime::NANOS_PER_SECOND % $divisor;
$nanos += $remainder * intdiv(LocalTime::NANOS_PER_SECOND, $divisor);
$nanos += intdiv($r1 + $remainder * $r2, $divisor);
if ($nanos < 0) {
$seconds--;
$nanos = LocalTime::NANOS_PER_SECOND + $nanos;
}
return new Duration($seconds, $nanos);
}
/**
* @dataProvider providerToIntegerThrowsException
* @expectedException \InvalidArgumentException
*
* @param mixed $value The invalid value.
*/
public function testToIntegerThrowsException($value)
{
Cast::toInteger($value);
}
/**
* Returns a copy of this year with the specified number of years subtracted.
*
* This instance is immutable and unaffected by this method call.
*
* @param integer $years The years to subtract, may be negative.
*
* @return Year A Year based on this year with the period subtracted.
*
* @throws DateTimeException If the resulting year exceeds the supported range.
*/
public function minus($years)
{
$years = Cast::toInteger($years);
if ($years === 0) {
return $this;
}
$year = $this->year - $years;
Field\Year::check($year);
return new Year($year);
}
/**
* Returns the month that is the specified number of months before this one.
*
* The calculation rolls around the start of the year from January to December.
* The specified period may be negative.
*
* @param integer $months
*
* @return Month
*/
public function minus($months)
{
$months = Cast::toInteger($months);
return $this->plus(-$months);
}
