1 files changed, 38 insertions, 0 deletions
diff --git a/src/binaryconst.h b/src/binaryconst.h
new file mode 100644
index 00000000..b5b9735b
--- /dev/null
+++ b/src/binaryconst.h
@@ -0,0 +1,38 @@
+#ifndef __BINARYCONST_H__
+#define __BINARYCONST_H__
+
+/* Macros for allowing binary constants in C
+ * By Tom Torfs - donated to the public domain */
+
+#define HEX__(n) 0x##n##LU
+
+/* 8-bit conversion function */
+#define B8__(x) ((x&0x0000000FLU)?1:0)  \
+               +((x&0x000000F0LU)?2:0)  \
+               +((x&0x00000F00LU)?4:0)  \
+               +((x&0x0000F000LU)?8:0)  \
+               +((x&0x000F0000LU)?16:0) \
+               +((x&0x00F00000LU)?32:0) \
+               +((x&0x0F000000LU)?64:0) \
+               +((x&0xF0000000LU)?128:0)
+
+
+/*
+ * *** USER MACROS ***
+ */
+
+/* for upto 8-bit binary constants */
+#define B8(d) ((unsigned char)B8__(HEX__(d)))
+
+/* for upto 16-bit binary constants, MSB first */
+#define B16(dmsb,dlsb) (((unsigned short)B8(dmsb)<<8) + B8(dlsb))
+
+/*
+ * Sample usage:
+ *    B8(01010101) = 85
+ *    B16(10101010,01010101) = 43605
+ */
+
+
+#endif /* __BINARYCONST_H__ */
+