Class: Number

Inherits:
Numeric show all
Defined in:
opal/opal/corelib/number.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Numeric

#__coerced__, #clone, #conj, #div, #dup, #i, #imag, #polar, #real, #real?, #rect, #to_c

Methods included from Comparable

#between?, #clamp, normalize

Class Method Details

.allocate ⇒ Object

Raises:



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# File 'opal/opal/corelib/number.rb', line 9

def allocate
  raise TypeError, "allocator undefined for #{self.name}"
end

Instance Method Details

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



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# File 'opal/opal/corelib/number.rb', line 88

def %(other)
  %x{
    if (other.$$is_number) {
      if (other == -Infinity) {
        return other;
      }
      else if (other == 0) {
        #{raise ZeroDivisionError, "divided by 0"};
      }
      else if (other < 0 || self < 0) {
        return (self % other + other) % other;
      }
      else {
        return self % other;
      }
    }
    else {
      return #{__coerced__ :%, other};
    }
  }
end

#&(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 110

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

#*(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 64

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

#**(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 256

def **(other)
  if Integer === other
    if !(Integer === self) || other > 0
      `Math.pow(self, other)`
    else
      Rational.new(self, 1) ** other
    end
  elsif self < 0 && (Float === other || Rational === other)
    Complex.new(self, 0) ** other.to_f
  elsif `other.$$is_number != null`
    `Math.pow(self, other)`
  else
    __coerced__ :**, other
  end
end

#+(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 42

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

#+@ ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 244

def +@
  `+self`
end

#-(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 53

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

#-@ ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 248

def -@
  `-self`
end

#/(other) ⇒ Object Also known as: fdiv 



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# File 'opal/opal/corelib/number.rb', line 75

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

#<(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 143

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

#<<(count) ⇒ Object 



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

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/number.rb', line 154

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

#<=>(other) ⇒ Object 



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

def <=>(other)
  %x{
    return spaceship_operator(self, other);
  }
rescue ArgumentError
  nil
end

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



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

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

#===(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 272

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

#>(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 165

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

#>=(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 176

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

#>>(count) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 224

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/number.rb', line 230

def [](bit)
  bit = Opal.coerce_to! bit, Integer, :to_int

  %x{
    if (#{bit} < 0) {
      return 0;
    }
    if (#{bit} >= 32) {
      return #{ self } < 0 ? 1 : 0;
    }
    return (self >> #{bit}) & 1;
  }
end

#^(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 132

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

#__id__ ⇒ Object Also known as: object_id 



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# File 'opal/opal/corelib/number.rb', line 36

def __id__
  `(self * 2) + 1`
end

#abs ⇒ Object Also known as: magnitude 



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# File 'opal/opal/corelib/number.rb', line 300

def abs
  `Math.abs(self)`
end

#abs2 ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 304

def abs2
  `Math.abs(self * self)`
end

#angle ⇒ Object Also known as: arg, phase 



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# File 'opal/opal/corelib/number.rb', line 308

def angle
  return self if nan?

  %x{
    if (self == 0) {
      if (1 / self > 0) {
        return 0;
      }
      else {
        return Math.PI;
      }
    }
    else if (self < 0) {
      return Math.PI;
    }
    else {
      return 0;
    }
  }
end

#bit_length ⇒ Object 



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

def bit_length
  unless Integer === self
    raise NoMethodError.new("undefined method `bit_length` for #{self}:Float", 'bit_length')
  end

  %x{
    if (self === 0 || self === -1) {
      return 0;
    }

    var result = 0,
        value  = self < 0 ? ~self : self;

    while (value != 0) {
      result   += 1;
      value  >>>= 1;
    }

    return result;
  }
end

#ceil ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 354

def ceil
  `Math.ceil(self)`
end

#chr(encoding = undefined) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 358

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

#coerce(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 16

def coerce(other)
  %x{
    if (other === nil) {
      #{raise TypeError, "can't convert #{other.class} into Float"};
    }
    else if (other.$$is_string) {
      return [#{Float(other)}, self];
    }
    else if (#{other.respond_to?(:to_f)}) {
      return [#{Opal.coerce_to!(other, Float, :to_f)}, self];
    }
    else if (other.$$is_number) {
      return [other, self];
    }
    else {
      #{raise TypeError, "can't convert #{other.class} into Float"};
    }
  }
end

#denominator ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 362

def denominator
  if nan? || infinite?
    1
  else
    super
  end
end

#divmod(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 818

def divmod(other)
  if nan? || other.nan?
    raise FloatDomainError, "NaN"
  elsif infinite?
    raise FloatDomainError, "Infinity"
  else
    super
  end
end

#downto(stop, &block) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 370

def downto(stop, &block)
  return enum_for(:downto, stop){
    raise ArgumentError, "comparison of #{self.class} with #{stop.class} failed" unless Numeric === stop
    stop > self ? 0 : self - stop + 1
  } unless block_given?

  %x{
    if (!stop.$$is_number) {
      #{raise ArgumentError, "comparison of #{self.class} with #{stop.class} failed"}
    }
    for (var i = self; i >= stop; i--) {
      block(i);
    }
  }

  self
end

#equal?(other) ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/number.rb', line 390

def equal?(other)
  self == other || `isNaN(self) && isNaN(other)`
end

#even? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/number.rb', line 394

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

#finite? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/number.rb', line 859

def finite?
  `self != Infinity && self != -Infinity && !isNaN(self)`
end

#floor ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 398

def floor
  `Math.floor(self)`
end

#gcd(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 402

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/number.rb', line 422

def gcdlcm(other)
  [gcd, lcm]
end

#infinite? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/number.rb', line 863

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/number.rb', line 440

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/number.rb', line 426

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

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

Returns:



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# File 'opal/opal/corelib/number.rb', line 430

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/number.rb', line 448

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/number.rb', line 855

def nan?
  `isNaN(self)`
end

#negative? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/number.rb', line 881

def negative?
  `self == -Infinity || 1 / self < 0`
end

#next ⇒ Object Also known as: succ 



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# File 'opal/opal/corelib/number.rb', line 467

def next
  `self + 1`
end

#nonzero? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/number.rb', line 471

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

#numerator ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 475

def numerator
  if nan? || infinite?
    self
  else
    super
  end
end

#odd? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/number.rb', line 483

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

#ord ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 487

def ord
  self
end

#positive? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/number.rb', line 877

def positive?
  `self != 0 && (self == Infinity || 1 / self > 0)`
end

#pred ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 491

def pred
  `self - 1`
end

#quo(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 495

def quo(other)
  if Integer === self
    super
  else
    self / other
  end
end

#rationalize(eps = undefined) ⇒ Object 



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

def rationalize(eps = undefined)
  %x{
    if (arguments.length > 1) {
      #{raise ArgumentError, "wrong number of arguments (#{`arguments.length`} for 0..1)"};
    }
  }

  if Integer === self
    Rational.new(self, 1)
  elsif infinite?
    raise FloatDomainError, "Infinity"
  elsif nan?
    raise FloatDomainError, "NaN"
  elsif `eps == null`
    f, n  = Math.frexp self
    f     = Math.ldexp(f, Float::MANT_DIG).to_i
    n    -= Float::MANT_DIG

    Rational.new(2 * f, 1 << (1 - n)).rationalize(Rational.new(1, 1 << (1 - n)))
  else
    to_r.rationalize(eps)
  end
end

#round(ndigits = undefined) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 527

def round(ndigits = undefined)
  if Integer === self
    if `ndigits == null`
      return self
    end

    if Float === ndigits && ndigits.infinite?
      raise RangeError, "Infinity"
    end

    ndigits = Opal.coerce_to!(ndigits, Integer, :to_int)

    if ndigits < Integer::MIN
      raise RangeError, "out of bounds"
    end

    if `ndigits >= 0`
      return self
    end

    ndigits = -ndigits;

    %x{
      if (0.415241 * ndigits - 0.125 > #{size}) {
        return 0;
      }

      var f = Math.pow(10, ndigits),
          x = Math.floor((Math.abs(x) + f / 2) / f) * f;

      return self < 0 ? -x : x;
    }
  else
    if nan? && `ndigits == null`
      raise FloatDomainError, "NaN"
    end

    ndigits = Opal.coerce_to!(`ndigits || 0`, Integer, :to_int)

    if ndigits <= 0
      if nan?
        raise RangeError, "NaN"
      elsif infinite?
        raise FloatDomainError, "Infinity"
      end
    elsif ndigits == 0
      return `Math.round(self)`
    elsif nan? || infinite?
      return self
    end

    _, exp = Math.frexp(self)

    if ndigits >= (Float::DIG + 2) - (exp > 0 ? exp / 4 : exp / 3 - 1)
      return self
    end

    if ndigits < -(exp > 0 ? exp / 3 + 1 : exp / 4)
      return 0
    end

    `Math.round(self * Math.pow(10, ndigits)) / Math.pow(10, ndigits)`
  end
end

#size ⇒ Object

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



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# File 'opal/opal/corelib/number.rb', line 851

def size
  4
end

#step(limit = undefined, step = undefined, to: undefined, by: undefined, &block) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 592

def step(limit = undefined, step = undefined, to: undefined, by: undefined, &block)
  %x{
    if (limit !== undefined && to !== undefined) {
      #{raise ArgumentError, "to is given twice"}
    }

    if (step !== undefined && by !== undefined) {
      #{raise ArgumentError, "step is given twice"}
    }

    function validateParameters() {
      if (to !== undefined) {
        limit = to;
      }

      if (limit === undefined) {
        limit = nil;
      }

      if (step === nil) {
        #{raise TypeError, "step must be numeric"}
      }

      if (step === 0) {
        #{raise ArgumentError, "step can't be 0"}
      }

      if (by !== undefined) {
        step = by;
      }

      if (step === nil || step == null) {
        step = 1;
      }

      var sign = #{step <=> 0};

      if (sign === nil) {
        #{raise TypeError, "0 can't be coerced into #{step.class}"}
      }

      if (limit === nil || limit == null) {
        limit = sign > 0 ? #{Float::INFINITY} : #{-Float::INFINITY};
      }

      #{Opal.compare(self, limit)}
    }

    function stepFloatSize() {
      if ((step > 0 && self > limit) || (step < 0 && self < limit)) {
        return 0;
      } else if (step === Infinity || step === -Infinity) {
        return 1;
      } else {
        var abs = Math.abs, floor = Math.floor,
            err = (abs(self) + abs(limit) + abs(limit - self)) / abs(step) * #{Float::EPSILON};

        if (err === Infinity || err === -Infinity) {
          return 0;
        } else {
          if (err > 0.5) {
            err = 0.5;
          }

          return floor((limit - self) / step + err) + 1
        }
      }
    }

    function stepSize() {
      validateParameters();

      if (step === 0) {
        return Infinity;
      }

      if (step % 1 !== 0) {
        return stepFloatSize();
      } else if ((step > 0 && self > limit) || (step < 0 && self < limit)) {
        return 0;
      } else {
        var ceil = Math.ceil, abs = Math.abs,
            lhs = abs(self - limit) + 1,
            rhs = abs(step);

        return ceil(lhs / rhs);
      }
    }
  }

  unless block_given?
    positional_args = []
    keyword_args = {}

    %x{
      if (limit !== undefined) {
        positional_args.push(limit);
      }

      if (step !== undefined) {
        positional_args.push(step);
      }

      if (to !== undefined) {
        Opal.hash_put(keyword_args, "to", to);
      }

      if (by !== undefined) {
        Opal.hash_put(keyword_args, "by", by);
      }

      if (!#{keyword_args.empty?}) {
        positional_args.push(keyword_args);
      }
    }

    return enum_for(:step, *positional_args) { `stepSize()` }
  end

  %x{
    validateParameters();

    if (step === 0) {
      while (true) {
        block(self);
      }
    }

    if (self % 1 !== 0 || limit % 1 !== 0 || step % 1 !== 0) {
      var n = stepFloatSize();

      if (n > 0) {
        if (step === Infinity || step === -Infinity) {
          block(self);
        } else {
          var i = 0, d;

          if (step > 0) {
            while (i < n) {
              d = i * step + self;
              if (limit < d) {
                d = limit;
              }
              block(d);
              i += 1;
            }
          } else {
            while (i < n) {
              d = i * step + self;
              if (limit > d) {
                d = limit;
              }
              block(d);
              i += 1
            }
          }
        }
      }
    } else {
      var value = self;

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

    return self;
  }
end

#times(&block) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 772

def times(&block)
  return enum_for(:times) { self } unless block

  %x{
    for (var i = 0; i < self; i++) {
      block(i);
    }
  }

  self
end

#to_f ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 784

def to_f
  self
end

#to_i ⇒ Object Also known as: to_int, truncate 



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# File 'opal/opal/corelib/number.rb', line 788

def to_i
  `parseInt(self, 10)`
end

#to_r ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 794

def to_r
  if Integer === self
    Rational.new(self, 1)
  else
    f, e  = Math.frexp(self)
    f     = Math.ldexp(f, Float::MANT_DIG).to_i
    e    -= Float::MANT_DIG

    (f * (Float::RADIX ** e)).to_r
  end
end

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



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# File 'opal/opal/corelib/number.rb', line 806

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(stop, &block) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 828

def upto(stop, &block)
  return enum_for(:upto, stop){
    raise ArgumentError, "comparison of #{self.class} with #{stop.class} failed" unless Numeric === stop
    stop < self ? 0 : stop - self + 1
  } unless block_given?

  %x{
    if (!stop.$$is_number) {
      #{raise ArgumentError, "comparison of #{self.class} with #{stop.class} failed"}
    }
    for (var i = self; i <= stop; i++) {
      block(i);
    }
  }

  self
end

#zero? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/number.rb', line 846

def zero?
  `self == 0`
end

#|(other) ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 121

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

#~ ⇒ Object 



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# File 'opal/opal/corelib/number.rb', line 252

def ~
  `~self`
end