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Class: Numeric

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

Direct Known Subclasses

Complex , Float , Integer , Number , Rational

Instance Method Summary collapse

Methods included from Comparable

#< , #<= , #== , #> , #>= , #between? , #clamp

Instance Method Details

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

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# File 'opal/opal/corelib/numeric.rb', line 44
def %(other)
 self - other * div(other)
end

#+@Object

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# File 'opal/opal/corelib/numeric.rb', line 36
def +@
 self
end

#-@Object

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# File 'opal/opal/corelib/numeric.rb', line 40
def -@
 0 - self
end

#<=>(other) ⇒ Object

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# File 'opal/opal/corelib/numeric.rb', line 28
def <=>(other)
 if equal? other
 return 0
 end
 nil
end

#__coerced__(method, other) ⇒ Object

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# File 'opal/opal/corelib/numeric.rb', line 14
def __coerced__(method, other)
 if other.respond_to?(:coerce)
 a, b = other.coerce(self)
 a.__send__ method, b
 else
 case method
 when :+, :-, :*, :/, :%, :&, :|, :^, :**
 raise TypeError , "#{other.class} can't be coerced into Numeric"
 when :>, :>=, :<, :<=, :<=>
 raise ArgumentError , "comparison of #{self.class} with #{other.class} failed"
 end
 end
end

#absObject Also known as: magnitude

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# File 'opal/opal/corelib/numeric.rb', line 48
def abs
 self < 0 ? -self : self
end

#abs2Object

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# File 'opal/opal/corelib/numeric.rb', line 52
def abs2
 self * self
end

#angleObject Also known as: arg

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# File 'opal/opal/corelib/numeric.rb', line 56
def angle
 self < 0 ? Math ::PI  : 0
end

#ceil(ndigits = 0) ⇒ Object

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# File 'opal/opal/corelib/numeric.rb', line 62
def ceil(ndigits = 0)
 to_f.ceil(ndigits)
end

#clone(freeze: true) ⇒ Object

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# File 'opal/opal/corelib/numeric.rb', line 332
def clone(freeze: true)
 self
end

#coerce(other) ⇒ Object

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# File 'opal/opal/corelib/numeric.rb', line 6
def coerce(other)
 if other.instance_of? self.class
 return [other, self]
 end
 [Float (other), Float (self)]
end

#conjObject Also known as: conjugate

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# File 'opal/opal/corelib/numeric.rb', line 66
def conj
 self
end

#denominatorObject

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# File 'opal/opal/corelib/numeric.rb', line 72
def denominator
 to_r.denominator
end

#div(other) ⇒ Object

Raises:

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# File 'opal/opal/corelib/numeric.rb', line 76
def div(other)
 raise ZeroDivisionError , 'divided by o' if other == 0
 (self / other).floor
end

#divmod(other) ⇒ Object

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# File 'opal/opal/corelib/numeric.rb', line 82
def divmod(other)
 [div(other), self % other]
end

#dupObject

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# File 'opal/opal/corelib/numeric.rb', line 328
def dup
 self
end

#fdiv(other) ⇒ Object

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# File 'opal/opal/corelib/numeric.rb', line 86
def fdiv(other)
 to_f / other
end

#finite?Boolean

Returns:

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# File 'opal/opal/corelib/numeric.rb', line 336
def finite?
 true
end

#floor(ndigits = 0) ⇒ Object

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# File 'opal/opal/corelib/numeric.rb', line 90
def floor(ndigits = 0)
 to_f.floor(ndigits)
end

#iObject

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# File 'opal/opal/corelib/numeric.rb', line 94
def i
 Complex (0, self)
end

#imagObject Also known as: imaginary

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# File 'opal/opal/corelib/numeric.rb', line 98
def imag
 0
end

#infinite?Boolean

Returns:

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# File 'opal/opal/corelib/numeric.rb', line 340
def infinite?
 nil
end

#integer?Boolean

Returns:

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# File 'opal/opal/corelib/numeric.rb', line 104
def integer?
 false
end

#negative?Boolean

Returns:

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# File 'opal/opal/corelib/numeric.rb', line 324
def negative?
 self < 0
end

#nonzero?Boolean

Returns:

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# File 'opal/opal/corelib/numeric.rb', line 112
def nonzero?
 zero? ? nil : self
end

#numeratorObject

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# File 'opal/opal/corelib/numeric.rb', line 116
def numerator
 to_r.numerator
end

#polarObject

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# File 'opal/opal/corelib/numeric.rb', line 122
def polar
 [abs, arg]
end

#positive?Boolean

Returns:

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# File 'opal/opal/corelib/numeric.rb', line 320
def positive?
 self > 0
end

#quo(other) ⇒ Object

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# File 'opal/opal/corelib/numeric.rb', line 126
def quo(other)
 Opal .coerce_to! (self, Rational , :to_r) / other
end

#realObject

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# File 'opal/opal/corelib/numeric.rb', line 130
def real
 self
end

#real?Boolean

Returns:

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# File 'opal/opal/corelib/numeric.rb', line 134
def real?
 true
end

#rectObject Also known as: rectangular

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# File 'opal/opal/corelib/numeric.rb', line 138
def rect
 [self, 0]
end

#round(digits = undefined) ⇒ Object

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# File 'opal/opal/corelib/numeric.rb', line 144
def round(digits = undefined)
 to_f.round(digits)
end

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

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# File 'opal/opal/corelib/numeric.rb', line 148
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'}
 }
 if (to !== undefined) {
 limit = to;
 }
 if (by !== undefined) {
 step = by;
 }
 if (limit === undefined) {
 limit = nil;
 }
 function validateParameters() {
 if (step === nil) {
 #{raise TypeError , 'step must be numeric'}
 }
 if (step != null && #{step == 0}) {
 #{raise ArgumentError , "step can't be 0"}
 }
 if (step === nil || step == null) {
 step = 1;
 }
 var sign = #{step <=> 0};
 if (sign === nil) {
 #{raise ArgumentError , "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);
 }
 }
 }
 return enum_for(:step, limit, step, &`stepSize`) unless block_given?
 %x{
 validateParameters();
 var isDesc = #{step.negative?},
 isInf = #{step == 0} ||
 (limit === Infinity && !isDesc) ||
 (limit === -Infinity && isDesc);
 if (self.$$is_number && step.$$is_number && limit.$$is_number) {
 if (self % 1 === 0 && (isInf || limit % 1 === 0) && step % 1 === 0) {
 var value = self;
 if (isInf) {
 for (;; value += step) {
 block(value);
 }
 } else if (isDesc) {
 for (; value >= limit; value += step) {
 block(value);
 }
 } else {
 for (; value <= limit; value += step) {
 block(value);
 }
 }
 return self;
 } else {
 var begin = #{to_f}.valueOf();
 step = #{step.to_f}.valueOf();
 limit = #{limit.to_f}.valueOf();
 var n = stepFloatSize();
 if (!isFinite(step)) {
 if (n !== 0) block(begin);
 } else if (step === 0) {
 while (true) {
 block(begin);
 }
 } else {
 for (var i = 0; i < n; i++) {
 var d = i * step + self;
 if (step >= 0 ? limit < d : limit > d) {
 d = limit;
 }
 block(d);
 }
 }
 return self;
 }
 }
 }
 counter = self
 while `isDesc ? #{counter >= limit} : #{counter <= limit}`
 yield counter
 counter += step
 end
end

#to_cObject

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# File 'opal/opal/corelib/numeric.rb', line 304
def to_c
 Complex (self, 0)
end

#to_intObject

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# File 'opal/opal/corelib/numeric.rb', line 308
def to_int
 to_i
end

#truncate(ndigits = 0) ⇒ Object

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# File 'opal/opal/corelib/numeric.rb', line 312
def truncate(ndigits = 0)
 to_f.truncate(ndigits)
end

#zero?Boolean

Returns:

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# File 'opal/opal/corelib/numeric.rb', line 316
def zero?
 self == 0
end

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