Pluggable Math

build_config.rb

@@ -11,6 +11,9 @@ MRuby::Build.new do |conf|
   # conf.gem :github => 'masuidrive/mrbgems-example', :branch => 'master'
   # conf.gem :git => 'git@github.com:masuidrive/mrbgems-example.git', :branch => 'master', :options => '-v'
 
+  # Use standard Math module
+  conf.gem 'mgems/mruby-math'
+
   # Use standard Time class
   conf.gem 'mgems/mruby-time'
 

include/mrbconf.h

@@ -45,7 +45,6 @@
 
 /* -DDISABLE_XXXX to drop following features */
 //#define DISABLE_SPRINTF	/* Kernel.sprintf method */
-//#define DISABLE_MATH		/* Math functions */
 //#define DISABLE_STRUCT	/* Struct class */
 //#define DISABLE_STDIO		/* use of stdio */
 
@@ -85,9 +84,6 @@ typedef short mrb_sym;
 #ifndef DISABLE_SPRINTF
 #define ENABLE_SPRINTF
 #endif
-#ifndef DISABLE_MATH
-#define ENABLE_MATH
-#endif
 #ifndef DISABLE_STRUCT
 #define ENABLE_STRUCT
 #endif

mgems/mruby-math/mrbgem.rake

+MRuby::Gem::Specification.new('mruby-math') do |spec|
+  spec.license = 'MIT'
+  spec.authors = 'mruby developers'
+end

src/math.c → mgems/mruby-math/src/math.c

@@ -7,7 +7,6 @@
 #include "mruby.h"
 #include "mruby/array.h"
 
-#ifdef ENABLE_MATH
 #include <math.h>
 
 #define domain_error(msg) \
@@ -630,7 +629,7 @@ math_erfc(mrb_state *mrb, mrb_value obj)
 
 /* ------------------------------------------------------------------------*/
 void
-mrb_init_math(mrb_state *mrb)
+mrb_mruby_math_gem_init(mrb_state* mrb)
 {
   struct RClass *mrb_math;
   mrb_math = mrb_define_module(mrb, "Math");
@@ -685,4 +684,8 @@ mrb_init_math(mrb_state *mrb)
   mrb_define_module_function(mrb, mrb_math, "erf",  math_erf,  ARGS_REQ(1));
   mrb_define_module_function(mrb, mrb_math, "erfc", math_erfc, ARGS_REQ(1));
 }
-#endif	/* ENABLE_MATH */
+
+void
+mrb_mruby_math_gem_final(mrb_state* mrb)
+{
+}

src/init.c

@@ -56,9 +56,6 @@ mrb_init_core(mrb_state *mrb)
   mrb_init_regexp(mrb); DONE;
 #ifdef ENABLE_STDIO
   mrb_init_print(mrb); DONE;
-#endif
-#ifdef ENABLE_MATH
-  mrb_init_math(mrb); DONE;
 #endif
   mrb_init_mrblib(mrb); DONE;
 #ifndef DISABLE_GEMS