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Yukihiro "Matz" Matsumoto
0fab703028
Replace binary search with linear scan in mt_get(), mt_put(), mt_del(), mt_chain_has(), and mrb_mt_foreach(). The method cache makes repeated lookups O(1), so linear scan on cache misses is acceptable. This removes the sorting requirement, allowing ROM entry arrays to be declared const. On embedded systems, const static data resides in flash/ROM instead of RAM, saving ~8.4KB for ~700 method entries on 32-bit MCUs. Co-authored-by: Claude <noreply@anthropic.com>
mruby-complex
mruby-complex is an mrbgem that provides a Complex class for mruby, allowing for the representation and manipulation of complex numbers. It is designed to be compatible with the Complex class in standard Ruby.
Functionality
The Complex class provided by this mrbgem supports:
- Creation of complex numbers from real and imaginary parts, or using the
isuffix for numbers. - Basic arithmetic operations: addition (
+), subtraction (-), multiplication (*), division (/). - Methods to access the real and imaginary parts (
real,imaginaryorimag). - Calculation of absolute value (
abs,magnitude), argument/angle (arg,angle,phase), and square of the absolute value (abs2). - Complex conjugate (
conjugate,conj). - Conversion to polar coordinates (
polar). - Conversion to other numeric types where appropriate (
to_f,to_i,to_r,to_c). - Inspection and string representation (
inspect,to_s).
Usage Examples
Here are some basic examples of how to use the Complex class:
# Creating complex numbers
c1 = Complex(1, 2) # => (1+2i)
c2 = 3 + 4i # => (3+4i)
c3 = Complex.polar(5, Math::PI/2) # => (0.0+5.0i) (approximately)
# Arithmetic operations
puts c1 + c2 # => (4+6i)
puts c1 - c2 # => (-2-2i)
puts c1 * c2 # => (-5+10i)
puts c1 / c2 # => (0.44+0.08i)
# Accessing parts
puts c1.real # => 1
puts c1.imaginary # => 2
# Other methods
puts c2.abs # => 5.0
puts c2.arg # => 0.9272952180016122 (radians)
puts c2.conjugate # => (3-4i)
puts c1.polar # => [2.23606797749979, 1.1071487177940904]
# Numerics can be converted to Complex
puts 5.to_c # => (5+0i)
puts 2.3.to_c # => (2.3+0i)
# The `i` method on numerics creates a complex number with zero real part
puts 5i # => (0+5i)
puts 2.3i # => (0+2.3i)
Note
This mrbgem aims to provide functionality similar to the Complex class found in the standard Ruby library. Refer to the Ruby documentation for Complex for more detailed information on the behavior of various methods.