Update the truncate number function to use decimal point (#333)

* Fixed to truncate as "1.234M" instead of "1234K"

* Optimized by switching to strings to avoid divisions

* Changed FP constants to strings

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

include/font.h

@@ -6,24 +6,16 @@
 #ifndef FONT_H
 #define FONT_H
 
-#include <tonc.h>
-
-extern const TFont gbalatro_sys8Font;
-extern const unsigned int gbalatro_sys8Glyphs[192];
-
 /** @name Decimal Point Fonts
  *  @brief A set of macros to map the fonts decimal-point values (e.g. ".1")
  *  to their replaced characters.
  *
  *  "FP#" -> Font "Point" "number"
  *
- *  This is used at compile time directly with the help of libtonc's XSTR() macro
- *  **Note**: This should **ONLY** be used with the XSTR() macro, otherwise it
- *  is undefined behavior.
  *
  *  For example:
  *  ```c
- *  tte_printf("Testing " XSTR(FP0_CHAR) " Something!");
+ *  tte_printf("Testing " FP0_STR " Something!");
  *  ```
  *  prints "Testing .0 Something!"
  *
@@ -44,16 +36,16 @@ extern const unsigned int gbalatro_sys8Glyphs[192];
  *
  * @{
  */
-#define FP0_CHAR & // .0
-#define FP1_CHAR ^ // .1
-#define FP2_CHAR } // .2
-#define FP3_CHAR { // .3
-#define FP4_CHAR | // .4
-#define FP5_CHAR ` // .5
-#define FP6_CHAR < // .6
-#define FP7_CHAR > // .7
-#define FP8_CHAR _ // .8
-#define FP9_CHAR ; // .9
+#define FP0_STR "&" // .0
+#define FP1_STR "^" // .1
+#define FP2_STR "}" // .2
+#define FP3_STR "{" // .3
+#define FP4_STR "|" // .4
+#define FP5_STR "`" // .5
+#define FP6_STR "<" // .6
+#define FP7_STR ">" // .7
+#define FP8_STR "_" // .8
+#define FP9_STR ";" // .9
 /** @} */
 
 /**
@@ -67,4 +59,15 @@ extern const unsigned int gbalatro_sys8Glyphs[192];
  */
 const char* get_font_point_str(int val);
 
+/**
+ * @brief Get the decimal point char equivalent of 0-9 from char param.
+ *
+ * @param digit_char A char of a digit between '0'-'9' to get '.0' to '.9' equivalents. Note that
+ *                   if a char outside of range is passed it the return value will be within limits
+ *                   but is not defined with any relationship to the input.
+ *
+ * @return A char representing a value in the font within the range of '.0' to '.9'
+ */
+char digit_char_to_font_point(char digit_char);
+
 #endif // FONT_H

include/gbalatro_sys8.h

@@ -0,0 +1,9 @@
+#ifndef GBALATRO_SYS8_FONT_H
+#define GBALATRO_SYS8_FONT_H
+
+#include <tonc.h>
+
+extern const TFont gbalatro_sys8Font;
+extern const unsigned int gbalatro_sys8Glyphs[192];
+
+#endif