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 



47
48
49
 
# File 'opal/opal/corelib/numeric.rb', line 47

def %(other)
  self - other * div(other)
end

#+@ ⇒ Object 



39
40
41
 
# File 'opal/opal/corelib/numeric.rb', line 39

def +@
  self
end

#-@ ⇒ Object 



43
44
45
 
# File 'opal/opal/corelib/numeric.rb', line 43

def -@
  0 - self
end

#<=>(other) ⇒ Object 



31
32
33
34
35
36
37
 
# File 'opal/opal/corelib/numeric.rb', line 31

def <=>(other)
  if equal? other
    return 0
  end

  nil
end

#__coerced__(method, other) ⇒ Object 



17
18
19
20
21
22
23
24
25
26
27
28
29
 
# File 'opal/opal/corelib/numeric.rb', line 17

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

#abs ⇒ Object Also known as: magnitude 



51
52
53
 
# File 'opal/opal/corelib/numeric.rb', line 51

def abs
  self < 0 ? -self : self
end

#abs2 ⇒ Object 



55
56
57
 
# File 'opal/opal/corelib/numeric.rb', line 55

def abs2
  self * self
end

#angle ⇒ Object Also known as: arg 



59
60
61
 
# File 'opal/opal/corelib/numeric.rb', line 59

def angle
  self < 0 ? ::Math::PI : 0
end

#ceil(ndigits = 0) ⇒ Object 



63
64
65
 
# File 'opal/opal/corelib/numeric.rb', line 63

def ceil(ndigits = 0)
  to_f.ceil(ndigits)
end

#clone(freeze: true) ⇒ Object 



331
332
333
 
# File 'opal/opal/corelib/numeric.rb', line 331

def clone(freeze: true)
  self
end

#coerce(other) ⇒ Object 



9
10
11
12
13
14
15
 
# File 'opal/opal/corelib/numeric.rb', line 9

def coerce(other)
  if other.instance_of? self.class
    return [other, self]
  end

  [::Kernel.Float(other), ::Kernel.Float(self)]
end

#conj ⇒ Object Also known as: conjugate 



67
68
69
 
# File 'opal/opal/corelib/numeric.rb', line 67

def conj
  self
end

#denominator ⇒ Object 



71
72
73
 
# File 'opal/opal/corelib/numeric.rb', line 71

def denominator
  to_r.denominator
end

#div(other) ⇒ Object 



75
76
77
78
79
 
# File 'opal/opal/corelib/numeric.rb', line 75

def div(other)
  ::Kernel.raise ::ZeroDivisionError, 'divided by o' if other == 0

  (self / other).floor
end

#divmod(other) ⇒ Object 



81
82
83
 
# File 'opal/opal/corelib/numeric.rb', line 81

def divmod(other)
  [div(other), self % other]
end

#dup ⇒ Object 



327
328
329
 
# File 'opal/opal/corelib/numeric.rb', line 327

def dup
  self
end

#fdiv(other) ⇒ Object 



85
86
87
 
# File 'opal/opal/corelib/numeric.rb', line 85

def fdiv(other)
  to_f / other
end

#finite? ⇒ Boolean

Returns:



335
336
337
 
# File 'opal/opal/corelib/numeric.rb', line 335

def finite?
  true
end

#floor(ndigits = 0) ⇒ Object 



89
90
91
 
# File 'opal/opal/corelib/numeric.rb', line 89

def floor(ndigits = 0)
  to_f.floor(ndigits)
end

#i ⇒ Object 



93
94
95
 
# File 'opal/opal/corelib/numeric.rb', line 93

def i
  ::Kernel.Complex(0, self)
end

#imag ⇒ Object Also known as: imaginary 



97
98
99
 
# File 'opal/opal/corelib/numeric.rb', line 97

def imag
  0
end

#infinite? ⇒ Boolean

Returns:



339
340
341
 
# File 'opal/opal/corelib/numeric.rb', line 339

def infinite?
  nil
end

#integer? ⇒ Boolean

Returns:



101
102
103
 
# File 'opal/opal/corelib/numeric.rb', line 101

def integer?
  false
end

#negative? ⇒ Boolean

Returns:



323
324
325
 
# File 'opal/opal/corelib/numeric.rb', line 323

def negative?
  self < 0
end

#nonzero? ⇒ Boolean

Returns:



105
106
107
 
# File 'opal/opal/corelib/numeric.rb', line 105

def nonzero?
  zero? ? nil : self
end

#numerator ⇒ Object 



109
110
111
 
# File 'opal/opal/corelib/numeric.rb', line 109

def numerator
  to_r.numerator
end

#polar ⇒ Object 



113
114
115
 
# File 'opal/opal/corelib/numeric.rb', line 113

def polar
  [abs, arg]
end

#positive? ⇒ Boolean

Returns:



319
320
321
 
# File 'opal/opal/corelib/numeric.rb', line 319

def positive?
  self > 0
end

#quo(other) ⇒ Object 



117
118
119
 
# File 'opal/opal/corelib/numeric.rb', line 117

def quo(other)
  ::Opal.coerce_to!(self, ::Rational, :to_r) / other
end

#real ⇒ Object 



121
122
123
 
# File 'opal/opal/corelib/numeric.rb', line 121

def real
  self
end

#real? ⇒ Boolean

Returns:



125
126
127
 
# File 'opal/opal/corelib/numeric.rb', line 125

def real?
  true
end

#rect ⇒ Object Also known as: rectangular 



129
130
131
 
# File 'opal/opal/corelib/numeric.rb', line 129

def rect
  [self, 0]
end

#round(digits = undefined) ⇒ Object 



133
134
135
 
# File 'opal/opal/corelib/numeric.rb', line 133

def round(digits = undefined)
  to_f.round(digits)
end

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



137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
 
# File 'opal/opal/corelib/numeric.rb', line 137

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

    if (step !== undefined && by !== undefined) {
      #{::Kernel.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) {
        #{::Kernel.raise ::TypeError, 'step must be numeric'}
      }

      if (step != null && #{step == 0}) {
        #{::Kernel.raise ::ArgumentError, "step can't be 0"}
      }

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

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

      if (sign === nil) {
        #{::Kernel.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);
      }
    }

  }

  unless block_given?
    if (!limit || limit.is_a?(::Numeric)) &&
       (!step || step.is_a?(::Numeric))

      return ::Enumerator::ArithmeticSequence.new(
        [limit, step, ('to: ' if to), ('by: ' if by)], self
      )
    else
      return enum_for(:step, limit, step, &`stepSize`)
    end
  end

  %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_c ⇒ Object 



303
304
305
 
# File 'opal/opal/corelib/numeric.rb', line 303

def to_c
  ::Kernel.Complex(self, 0)
end

#to_int ⇒ Object 



307
308
309
 
# File 'opal/opal/corelib/numeric.rb', line 307

def to_int
  to_i
end

#truncate(ndigits = 0) ⇒ Object 



311
312
313
 
# File 'opal/opal/corelib/numeric.rb', line 311

def truncate(ndigits = 0)
  to_f.truncate(ndigits)
end

#zero? ⇒ Boolean

Returns:



315
316
317
 
# File 'opal/opal/corelib/numeric.rb', line 315

def zero?
  self == 0
end