-extern double get_volume_units(unsigned int mm, int *frac, const char **units);
-extern double get_temp_units(unsigned int mm, const char **units);
+extern double get_volume_units(unsigned int ml, int *frac, const char **units);
+extern double get_temp_units(unsigned int mk, const char **units);
+extern double get_weight_units(unsigned int grams, int *frac, const char **units);