Module: GSL4r::Util
- Included in:
- Block::Methods, Complex::Methods
- Defined in:
- lib/gsl4r/util.rb
Defined Under Namespace
Modules: AutoPrefix
Instance Method Summary collapse
Instance Method Details
#attach_gsl_function(method_name, args, return_var, args_type = nil, return_type = nil, add_self = true) ⇒ Object
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# File 'lib/gsl4r/util.rb', line 17 def attach_gsl_function( method_name, args, return_var, args_type=nil, return_type=nil, add_self=true ) # This function is attached to the extended ::FFI::Library # module from the calling namespace, e.g. ::GSL4r::Complex::Methods attach_function method_name, args, return_var # Give a hint to the current module if this method should add a copy # of itself to the calling list to make calls convienent e.g. a.abs self.class.class_eval <<-end_eval ::#{self}::#{method_name.to_s.upcase}_ADD_SELF = #{add_self} end_eval if ( args_type != nil ) # prepare c and ruby args code c_src = "" c_call_vars = [] c_return_name = "c_r#{$c_var_num}" r_src = [] if ( ! args_type.is_a?(Array) ) args_type = Array.new([args_type]) end args_type.each { |a_t| c_var_name = "v#{$c_var_num += 1}" c_src << (a_t.respond_to?("c_type") ? " #{a_t.c_type} #{c_var_name};\n" : "#{a_t.to_s} #{c_var_name} ") c_src << (a_t.respond_to?("c_assignment") ? " #{a_t.c_assignment("#{c_var_name}")}\n" : "= (#{a_t.to_s})2.0;\n") c_call_vars << "#{c_var_name}" r_src << (a_t.respond_to?("r_type") ? " #{c_var_name} = #{a_t.r_type}.create" : "") r_src << (a_t.respond_to?("r_assignment") ? " #{a_t.r_assignment("#{c_var_name}")}" : " #{c_var_name} = 2.0") } # args_type.each # prepare c return type c_src << (return_type.respond_to?("c_type") ? " #{return_type.c_type} #{c_return_name};\n" : " #{return_type.to_s} #{c_return_name};\n") # prepare c call c_src << " #{c_return_name} = #{method_name}(#{c_call_vars.join(",")});\n" # now generate the ruby code for the unit test c_src << " puts(" << %Q{\\"def test_#{method_name}()\\"} << ");\n" # TODO, Need to insert ruby object instantiation code here! # r_src.each { |v| c_src << " puts(" << %Q{\\"#{v}\\"} << ");\n" } r_r1 = "r_r1" # ruby result c_src << " puts(" << %Q{\\" #{r_r1} = ::#{self.to_s}::#{method_name}(#{c_call_vars.join(",")})\\"} << ");\n" if ( return_type.respond_to?("c_to_r_assignment") ) r_r2 = "r_r2" # ruby result comparitor c_src << " puts(" << %Q{\\" #{r_r2} = #{return_type.r_type}.new\\"} << ");\n" c_src << " #{return_type.c_to_r_assignment(r_r2,c_return_name)}" c_src << " printf(" << %Q{\\" assert r_r1.equals(r_r2)\\\\n\\"} << ");\n" else c_src << " printf(" << %Q{\\" assert_in_delta r_r1, %.15g, EPSILON\\\\n\\"} << ", #{c_return_name});\n" end c_src << " puts(" << %Q{\\"end\\"} << ");" # TODO, create unit test for aliased/shorthand versions of methods eval <<-end_eval def c_test_#{method_name} # Build list of arguments and their values "#{c_src}" end end_eval end end |