Added C callable entry point for the 16x16=32 multiplication.

[cc65] / include / cc65.h

diff --git a/include/cc65.h b/include/cc65.h
index 8a555080399338bcc974db537ae01334732d1b2b..47d21cea9579909932e6fe900cc96b7ca9be3f86 100644 (file)
--- a/include/cc65.h
+++ b/include/cc65.h
@@ -44,12 +44,15 @@
 
 
 
-extern int __fastcall__ cc65_sin (unsigned x);
+unsigned long __fastcall__ cc65_umul16x16r32 (unsigned rhs, unsigned lhs);
+/* Multiplicate two unsigned 16 bit to yield an unsigned 32 bit result */
+
+int __fastcall__ cc65_sin (unsigned x);
 /* Return the sine of the argument, which must be in range 0..360. The result
  * is in 8.8 fixed point format, which means that 1.0 = $100 and -1.0 = $FF00.
  */
 
-extern int __fastcall__ cc65_cos (unsigned x);
+int __fastcall__ cc65_cos (unsigned x);
 /* Return the cosine of the argument, which must be in range 0..360. The result
  * is in 8.8 fixed point format, which means that 1.0 = $100 and -1.0 = $FF00.
  */