Implement ROMable modules. Add math module.

mp_module_obj_t can now be put in ROM.

Configuration of float type is now similar to longint: can now choose
none, float or double as the implementation.

math module has basic math functions.  For STM port, these are not yet
implemented (they are just stub functions).

3 files changed, 2 insertions, 11 deletions

diff --git a/unix/main.c b/unix/main.c
index fb0a6ecf0..481b81581 100644
--- a/unix/main.c
+++ b/unix/main.c
@@ -383,12 +383,6 @@ int main(int argc, char **argv) {
     return 0;
 }
 
-// for sqrt
-#include <math.h>
-machine_float_t machine_sqrt(machine_float_t x) {
-    return sqrt(x);
-}
-
 #include <sys/stat.h>
 
 uint mp_import_stat(const char *path) {
diff --git a/unix/mpconfigport.h b/unix/mpconfigport.h
index 99c13a7dc..8950337d4 100644
--- a/unix/mpconfigport.h
+++ b/unix/mpconfigport.h
@@ -8,7 +8,7 @@
 #define MICROPY_ENABLE_REPL_HELPERS (1)
 #define MICROPY_ENABLE_LEXER_UNIX   (1)
 #define MICROPY_ENABLE_SOURCE_LINE  (1)
-#define MICROPY_ENABLE_FLOAT        (1)
+#define MICROPY_FLOAT_IMPL          (MICROPY_FLOAT_IMPL_DOUBLE)
 #define MICROPY_LONGINT_IMPL        (MICROPY_LONGINT_IMPL_MPZ)
 #define MICROPY_PATH_MAX            (PATH_MAX)
 
@@ -28,9 +28,6 @@ typedef unsigned int machine_uint_t; // must be pointer size
 
 typedef void *machine_ptr_t; // must be of pointer size
 typedef const void *machine_const_ptr_t; // must be of pointer size
-typedef double machine_float_t;
-
-machine_float_t machine_sqrt(machine_float_t x);
 
 struct _mp_obj_fun_native_t;
 extern const struct _mp_obj_fun_native_t mp_builtin_open_obj;
diff --git a/unix/time.c b/unix/time.c
index 6dba9f0d0..1abd7cff3 100644
--- a/unix/time.c
+++ b/unix/time.c
@@ -28,7 +28,7 @@ static MP_DEFINE_CONST_FUN_OBJ_0(mod_time_clock_obj, mod_time_clock);
 static mp_obj_t mod_time_sleep(mp_obj_t arg) {
 #if MICROPY_ENABLE_FLOAT
     struct timeval tv;
-    machine_float_t val = mp_obj_get_float(arg);
+    mp_float_t val = mp_obj_get_float(arg);
     double ipart;
     tv.tv_usec = round(modf(val, &ipart) * 1000000);
     tv.tv_sec = ipart;