numeric.h: reduce conditional compilation branch on `MRB_NO_FLOAT`.

include/mruby/numeric.h

@@ -30,16 +30,7 @@ MRB_BEGIN_DECL
 #endif
 #endif
 
-#ifndef MRB_NO_FLOAT
-MRB_API mrb_value mrb_flo_to_fixnum(mrb_state *mrb, mrb_value val);
-#endif
 MRB_API mrb_value mrb_fixnum_to_str(mrb_state *mrb, mrb_value x, mrb_int base);
-/* ArgumentError if format string doesn't match /%(\.[0-9]+)?[aAeEfFgG]/ */
-#ifndef MRB_NO_FLOAT
-MRB_API mrb_value mrb_float_to_str(mrb_state *mrb, mrb_value x, const char *fmt);
-MRB_API int mrb_float_to_cstr(mrb_state *mrb, char *buf, size_t len, const char *fmt, mrb_float f);
-MRB_API mrb_float mrb_to_flo(mrb_state *mrb, mrb_value x);
-#endif
 
 MRB_API mrb_value mrb_num_plus(mrb_state *mrb, mrb_value x, mrb_value y);
 MRB_API mrb_value mrb_num_minus(mrb_state *mrb, mrb_value x, mrb_value y);
@@ -162,6 +153,13 @@ mrb_int_mul_overflow(mrb_int a, mrb_int b, mrb_int *c)
 #  define MRB_FLT_MAX           DBL_MAX
 #  define MRB_FLT_MAX_10_EXP    DBL_MAX_10_EXP
 # endif /* MRB_USE_FLOAT32 */
+
+MRB_API mrb_value mrb_flo_to_fixnum(mrb_state *mrb, mrb_value val);
+MRB_API mrb_value mrb_float_to_str(mrb_state *mrb, mrb_value x, const char *fmt);
+/* ArgumentError if format string doesn't match /%(\.[0-9]+)?[aAeEfFgG]/ */
+MRB_API int mrb_float_to_cstr(mrb_state *mrb, char *buf, size_t len, const char *fmt, mrb_float f);
+MRB_API mrb_float mrb_to_flo(mrb_state *mrb, mrb_value x);
+
 #endif /* MRB_NO_FLOAT */
 
 MRB_END_DECL