Class: Numeric

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
opal/opal/corelib/numeric.rb

Direct Known Subclasses

Complex, Float, Integer, Rational

Instance Method Summary collapse

Methods included from Comparable

#between?, normalize

Instance Method Details

#%(other) ⇒ Object Also known as: modulo 



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# File 'opal/opal/corelib/numeric.rb', line 84

def %(other)
  %x{
    if (other.$$is_number) {
      if (other < 0 || self < 0) {
        return (self % other + other) % other;
      }
      else {
        return self % other;
      }
    }
    else {
      return #{send_coerced :%, other};
    }
  }
end

#&(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 100

def &(other)
  %x{
    if (other.$$is_number) {
      return self & other;
    }
    else {
      return #{send_coerced :&, other};
    }
  }
end

#*(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 62

def *(other)
  %x{
    if (other.$$is_number) {
      return self * other;
    }
    else {
      return #{send_coerced :*, other};
    }
  }
end

#**(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 222

def **(other)
  %x{
    if (other.$$is_number) {
      return Math.pow(self, other);
    }
    else {
      return #{send_coerced :**, other};
    }
  }
end

#+(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 40

def +(other)
  %x{
    if (other.$$is_number) {
      return self + other;
    }
    else {
      return #{send_coerced :+, other};
    }
  }
end

#+@ ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 210

def +@
  `+self`
end

#-(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 51

def -(other)
  %x{
    if (other.$$is_number) {
      return self - other;
    }
    else {
      return #{send_coerced :-, other};
    }
  }
end

#-@ ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 214

def -@
  `-self`
end

#/(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 73

def /(other)
  %x{
    if (other.$$is_number) {
      return self / other;
    }
    else {
      return #{send_coerced :/, other};
    }
  }
end

#<(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 133

def <(other)
  %x{
    if (other.$$is_number) {
      return self < other;
    }
    else {
      return #{send_coerced :<, other};
    }
  }
end

#<<(count) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 190

def <<(count)
  count = Opal.coerce_to! count, Integer, :to_int

  `#{count} > 0 ? self << #{count} : self >> -#{count}`
end

#<=(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 144

def <=(other)
  %x{
    if (other.$$is_number) {
      return self <= other;
    }
    else {
      return #{send_coerced :<=, other};
    }
  }
end

#<=>(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 177

def <=>(other)
  %x{
    if (other.$$is_number) {
      return self > other ? 1 : (self < other ? -1 : 0);
    }
    else {
      return #{send_coerced :<=>, other};
    }
  }
rescue ArgumentError
  nil
end

#==(other) ⇒ Object Also known as: eql?, equal? 



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# File 'opal/opal/corelib/numeric.rb', line 233

def ==(other)
  %x{
    if (other.$$is_number) {
      return self == Number(other);
    }
    else if (#{other.respond_to? :==}) {
      return #{other == self};
    }
    else {
      return false;
    }
  }
end

#>(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 155

def >(other)
  %x{
    if (other.$$is_number) {
      return self > other;
    }
    else {
      return #{send_coerced :>, other};
    }
  }
end

#>=(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 166

def >=(other)
  %x{
    if (other.$$is_number) {
      return self >= other;
    }
    else {
      return #{send_coerced :>=, other};
    }
  }
end

#>>(count) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 196

def >>(count)
  count = Opal.coerce_to! count, Integer, :to_int

  `#{count} > 0 ? self >> #{count} : self << -#{count}`
end

#[](bit) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 202

def [](bit)
  bit = Opal.coerce_to! bit, Integer, :to_int
  min = -(2**30)
  max =  (2**30) - 1

  `(#{bit} < #{min} || #{bit} > #{max}) ? 0 : (self >> #{bit}) % 2`
end

#^(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 122

def ^(other)
  %x{
    if (other.$$is_number) {
      return self ^ other;
    }
    else {
      return #{send_coerced :^, other};
    }
  }
end

#abs ⇒ Object Also known as: magnitude 



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# File 'opal/opal/corelib/numeric.rb', line 247

def abs
  `Math.abs(self)`
end

#ceil ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 251

def ceil
  `Math.ceil(self)`
end

#chr(encoding = undefined) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 255

def chr(encoding=undefined)
  `String.fromCharCode(self)`
end

#coerce(other, type = :operation) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 8

def coerce(other, type = :operation)
  %x{
    if (other.$$is_number) {
      return [self, other];
    }
    else {
      return #{other.coerce(self)};
    }
  }
rescue
  case type
  when :operation
    raise TypeError, "#{other.class} can't be coerced into Numeric"

  when :comparison
    raise ArgumentError, "comparison of #{self.class} with #{other.class} failed"
  end
end

#conj ⇒ Object Also known as: conjugate 



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# File 'opal/opal/corelib/numeric.rb', line 259

def conj
  self
end

#divmod(rhs) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 447

def divmod(rhs)
  q = (self / rhs).floor
  r = self % rhs

  [q, r]
end

#downto(finish, &block) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 265

def downto(finish, &block)
  return enum_for :downto, finish unless block

  %x{
    for (var i = self; i >= finish; i--) {
      if (block(i) === $breaker) {
        return $breaker.$v;
      }
    }
  }

  self
end

#even? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/numeric.rb', line 282

def even?
  `self % 2 === 0`
end

#finite? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/numeric.rb', line 481

def finite?
  `self != Infinity && self != -Infinity`
end

#floor ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 286

def floor
  `Math.floor(self)`
end

#gcd(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 290

def gcd(other)
  unless Integer === other
    raise TypeError, 'not an integer'
  end

  %x{
    var min = Math.abs(self),
        max = Math.abs(other);

    while (min > 0) {
      var tmp = min;

      min = max % min;
      max = tmp;
    }

    return max;
  }
end

#gcdlcm(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 310

def gcdlcm(other)
  [gcd, lcm]
end

#hash ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 314

def hash
  `'Numeric:'+self.toString()`
end

#infinite? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/numeric.rb', line 485

def infinite?
  %x{
    if (self == Infinity) {
      return +1;
    }
    else if (self == -Infinity) {
      return -1;
    }
    else {
      return nil;
    }
  }
end

#instance_of?(klass) ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/numeric.rb', line 332

def instance_of?(klass)
  return true if klass == Fixnum && Integer === self
  return true if klass == Integer && Integer === self
  return true if klass == Float && Float === self

  super
end

#integer? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/numeric.rb', line 318

def integer?
  `self % 1 === 0`
end

#is_a?(klass) ⇒ Boolean Also known as: kind_of?

Returns:



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# File 'opal/opal/corelib/numeric.rb', line 322

def is_a?(klass)
  return true if klass == Fixnum && Integer === self
  return true if klass == Integer && Integer === self
  return true if klass == Float && Float === self

  super
end

#lcm(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 340

def lcm(other)
  unless Integer === other
    raise TypeError, 'not an integer'
  end

  %x{
    if (self == 0 || other == 0) {
      return 0;
    }
    else {
      return Math.abs(self * other / #{gcd(other)});
    }
  }
end

#nan? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/numeric.rb', line 477

def nan?
  `isNaN(self)`
end

#negative? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/numeric.rb', line 503

def negative?
  `1 / self < 0`
end

#next ⇒ Object Also known as: succ 



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# File 'opal/opal/corelib/numeric.rb', line 359

def next
  `self + 1`
end

#nonzero? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/numeric.rb', line 363

def nonzero?
  `self == 0 ? nil : self`
end

#odd? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/numeric.rb', line 367

def odd?
  `self % 2 !== 0`
end

#ord ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 371

def ord
  self
end

#positive? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/numeric.rb', line 499

def positive?
  `1 / self > 0`
end

#pred ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 375

def pred
  `self - 1`
end

#round(ndigits = 0) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 379

def round(ndigits=0)
  %x{
    var scale = Math.pow(10, ndigits);
    return Math.round(self * scale) / scale;
  }
end

#send_coerced(method, other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 27

def send_coerced(method, other)
  type = case method
    when :+, :-, :*, :/, :%, :&, :|, :^, :**
      :operation

    when :>, :>=, :<, :<=, :<=>
      :comparison
  end

  a, b = coerce(other, type)
  a.__send__ method, b
end

#size ⇒ Object

Since bitwise operations are 32 bit, declare it to be so.



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# File 'opal/opal/corelib/numeric.rb', line 473

def size
  4
end

#step(limit, step = 1, &block) ⇒ Object

Raises:



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# File 'opal/opal/corelib/numeric.rb', line 386

def step(limit, step = 1, &block)
  return enum_for :step, limit, step unless block

  raise ArgumentError, 'step cannot be 0' if `step == 0`

  %x{
    var value = self;

    if (step > 0) {
      while (value <= limit) {
        block(value);
        value += step;
      }
    }
    else {
      while (value >= limit) {
        block(value);
        value += step;
      }
    }
  }

  self
end

#times(&block) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 413

def times(&block)
  return enum_for :times unless block

  %x{
    for (var i = 0; i < self; i++) {
      if (block(i) === $breaker) {
        return $breaker.$v;
      }
    }
  }

  self
end

#to_f ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 427

def to_f
  self
end

#to_i ⇒ Object Also known as: to_int 



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# File 'opal/opal/corelib/numeric.rb', line 431

def to_i
  `parseInt(self)`
end

#to_s(base = 10) ⇒ Object Also known as: inspect 



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# File 'opal/opal/corelib/numeric.rb', line 437

def to_s(base = 10)
  if base < 2 || base > 36
    raise ArgumentError, 'base must be between 2 and 36'
  end

  `self.toString(base)`
end

#upto(finish, &block) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 454

def upto(finish, &block)
  return enum_for :upto, finish unless block

  %x{
    for (var i = self; i <= finish; i++) {
      if (block(i) === $breaker) {
        return $breaker.$v;
      }
    }
  }

  self
end

#zero? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/numeric.rb', line 468

def zero?
  `self == 0`
end

#|(other) ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 111

def |(other)
  %x{
    if (other.$$is_number) {
      return self | other;
    }
    else {
      return #{send_coerced :|, other};
    }
  }
end

#~ ⇒ Object 



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# File 'opal/opal/corelib/numeric.rb', line 218

def ~
  `~self`
end