diff options
Diffstat (limited to 'complex.c')
| -rw-r--r-- | complex.c | 63 |
1 files changed, 63 insertions, 0 deletions
@@ -1337,6 +1337,14 @@ numeric_abs2(VALUE self) #define id_PI rb_intern("PI") +/* + * call-seq: + * num.arg -> 0 or float + * num.angle -> 0 or float + * num.phase -> 0 or float + * + * Returns 0 if the value is positive, pi otherwise. + */ static VALUE numeric_arg(VALUE self) { @@ -1363,6 +1371,54 @@ numeric_conj(VALUE self) return self; } +/* + * call-seq: + * flo.arg -> 0 or float + * flo.angle -> 0 or float + * flo.phase -> 0 or float + * + * Returns 0 if the value is positive, pi otherwise. + */ +static VALUE +float_arg(VALUE self) +{ + if (isnan(RFLOAT_VALUE(self))) + return self; + return rb_call_super(0, 0); +} + +/* + * A complex number can be represented as a paired real number with + * imaginary unit; a+bi. Where a is real part, b is imaginary part + * and i is imaginary unit. Real a equals complex a+0i + * mathematically. + * + * In ruby, you can create complex object with Complex, Complex::rect, + * Complex::polar or to_c method. + * + * Complex(1) #=> (1+0i) + * Complex(2, 3) #=> (2+3i) + * Complex.polar(2, 3) #=> (-1.9799849932008908+0.2822400161197344i) + * 3.to_c #=> (3+0i) + * + * You can also create complex object from floating-point numbers or + * strings. + * + * Complex(0.3) #=> (0.3+0i) + * Complex('0.3-0.5i') #=> (0.3-0.5i) + * Complex('2/3+3/4i') #=> ((2/3)+(3/4)*i) + * Complex('1@2') #=> (-0.4161468365471424+0.9092974268256817i) + * + * 0.3.to_c #=> (0.3+0i) + * '0.3-0.5i'.to_c #=> (0.3-0.5i) + * '2/3+3/4i'.to_c #=> ((2/3)+(3/4)*i) + * '1@2'.to_c #=> (-0.4161468365471424+0.9092974268256817i) + * + * A complex object is either an exact or an inexact number. + * + * Complex(1, 1) / 2 #=> ((1/2)+(1/2)*i) + * Complex(1, 1) / 2.0 #=> (0.5+0.5i) + */ void Init_Complex(void) { @@ -1413,16 +1469,19 @@ Init_Complex(void) rb_define_global_function("Complex", nucomp_f_complex, -1); + rb_undef_method(rb_cComplex, "%"); rb_undef_method(rb_cComplex, "<"); rb_undef_method(rb_cComplex, "<="); rb_undef_method(rb_cComplex, "<=>"); rb_undef_method(rb_cComplex, ">"); rb_undef_method(rb_cComplex, ">="); rb_undef_method(rb_cComplex, "between?"); + rb_undef_method(rb_cComplex, "div"); rb_undef_method(rb_cComplex, "divmod"); rb_undef_method(rb_cComplex, "floor"); rb_undef_method(rb_cComplex, "ceil"); rb_undef_method(rb_cComplex, "modulo"); + rb_undef_method(rb_cComplex, "remainder"); rb_undef_method(rb_cComplex, "round"); rb_undef_method(rb_cComplex, "step"); rb_undef_method(rb_cComplex, "truncate"); @@ -1510,6 +1569,10 @@ Init_Complex(void) rb_define_method(rb_cNumeric, "conjugate", numeric_conj, 0); rb_define_method(rb_cNumeric, "conj", numeric_conj, 0); + rb_define_method(rb_cFloat, "arg", float_arg, 0); + rb_define_method(rb_cFloat, "angle", float_arg, 0); + rb_define_method(rb_cFloat, "phase", float_arg, 0); + rb_define_const(rb_cComplex, "I", f_complex_new_bang2(rb_cComplex, ZERO, ONE)); } |