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binaryconst.h
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#ifndef __BINARYCONST_H__
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#define __BINARYCONST_H__
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/* @file
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*
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* Macros for allowing binary constants in C.
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* By Tom Torfs - donated to the public domain
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*
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* binaryconst.h was integrated into the Dillo project in April 2004, and
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* presumably comes from the ancestor of the code found at
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* http://cprog.tomsweb.net/binconst.txt
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*/
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#define HEX__(n) 0x##n##LU
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/* 8-bit conversion function */
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#define B8__(x) ((x&0x0000000FLU)?1:0) \
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+((x&0x000000F0LU)?2:0) \
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+((x&0x00000F00LU)?4:0) \
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+((x&0x0000F000LU)?8:0) \
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+((x&0x000F0000LU)?16:0) \
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+((x&0x00F00000LU)?32:0) \
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+((x&0x0F000000LU)?64:0) \
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+((x&0xF0000000LU)?128:0)
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/*
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* *** USER MACROS ***
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*/
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/* for upto 8-bit binary constants */
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#define B8(d) ((unsigned char)B8__(HEX__(d)))
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/* for upto 16-bit binary constants, MSB first */
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#define B16(dmsb,dlsb) (((unsigned short)B8(dmsb)<<8) + B8(dlsb))
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/*
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* Sample usage:
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* B8(01010101) = 85
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* B16(10101010,01010101) = 43605
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*/
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#endif
/* __BINARYCONST_H__ */
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src
binaryconst.h
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