Organize the include of header files

- `#include <math.h>` is done in `mruby.h`.
  Eliminate the need to worry about the `MRB_NO_FLOAT` macro.

- Include mruby header files before standard header files.
  If the standard header file is already placed before `mruby.h`, the standard header file added in the future tends to be placed before `mruby.h`.

This change should some reduce the chances of macros that must be defined becoming undefined in C++ or including problematic header files in a particular mruby build configuration.

1 files changed, 0 insertions, 1 deletions

diff --git a/mrbgems/mruby-cmath/src/cmath.c b/mrbgems/mruby-cmath/src/cmath.c
index 03b181840..8b0c4d04a 100644
--- a/mrbgems/mruby-cmath/src/cmath.c
+++ b/mrbgems/mruby-cmath/src/cmath.c
@@ -15,7 +15,6 @@
 # error CMath conflicts with 'MRB_NO_FLOAT' configuration
 #endif
 
-#include <math.h>
 #include <complex.h>
 
 mrb_value mrb_complex_new(mrb_state *mrb, mrb_float real, mrb_float imag);