/usr/include/dx/lexical.h is in libdx4-dev 1:4.4.4-7+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* Open Visualization Data Explorer */
/* (C) Copyright IBM Corp. 1989,1999 */
/* ALL RIGHTS RESERVED */
/* This code licensed under the */
/* "IBM PUBLIC LICENSE - Open Visualization Data Explorer" */
/***********************************************************************/
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
#ifndef _DXI_LEXICAL_H_
#define _DXI_LEXICAL_H_
/*
* Lexical vector operations
*/
#define X(x,y) x/**/y
/*
* XYZ
*/
#define AddXYZ(A,B,C) ( \
X(A,x) = X(B,x) + X(C,x), \
X(A,y) = X(B,y) + X(C,y), \
X(A,z) = X(B,z) + X(C,z))
#define SubXYZ(A,B,C) ( \
X(A,x) = X(B,x) - X(C,x), \
X(A,y) = X(B,y) - X(C,y), \
X(A,z) = X(B,z) - X(C,z))
#define MulXYZ(A,B,C) ( \
X(A,x) = X(B,x) * C, \
X(A,y) = X(B,y) * C, \
X(A,z) = X(B,z) * C)
#define DivXYZ(A,B,C) ( \
X(A,x) = X(B,x) / C, \
X(A,y) = X(B,y) / C, \
X(A,z) = X(B,z) / C)
#define CopyXYZ(A,B) ( \
X(A,x) = X(B,x), \
X(A,y) = X(B,y), \
X(A,z) = X(B,z))
/*
* XZ
*/
#define AddXZ(A,B,C) ( \
X(A,x) = X(B,x) + X(C,x), \
X(A,z) = X(B,z) + X(C,z))
#define SubXZ(A,B,C) ( \
X(A,x) = X(B,x) - X(C,x), \
X(A,z) = X(B,z) - X(C,z))
#define MulXZ(A,B,C) ( \
X(A,x) = X(B,x) * C, \
X(A,z) = X(B,z) * C)
#define DivXZ(A,B,C) ( \
X(A,x) = X(B,x) / C, \
X(A,z) = X(B,z) / C)
#define MulZ(A,B,C) ( \
X(A,z) = X(B,z) * C)
/*
* DXRGB
*/
#define AddRGB(A,B,C) ( \
X(A,r) = X(B,r) + X(C,r), \
X(A,g) = X(B,g) + X(C,g), \
X(A,b) = X(B,b) + X(C,b))
#define SubRGB(A,B,C) ( \
X(A,r) = X(B,r) - X(C,r), \
X(A,g) = X(B,g) - X(C,g), \
X(A,b) = X(B,b) - X(C,b))
#define MulRGB(A,B,C) ( \
X(A,r) = X(B,r) * C, \
X(A,g) = X(B,g) * C, \
X(A,b) = X(B,b) * C)
#define DivRGB(A,B,C) ( \
X(A,r) = X(B,r) / C, \
X(A,g) = X(B,g) / C, \
X(A,b) = X(B,b) / C)
#define CopyRGB(A,B) ( \
X(A,r) = X(B,r), \
X(A,g) = X(B,g), \
X(A,b) = X(B,b))
#define LerpRGB(A,t,B,C) ( \
_t = 1 - t, \
X(A,r) = X(B,r)*t + X(C,r)*_t, \
X(A,g) = X(B,g)*t + X(C,g)*_t, \
X(A,b) = X(B,b)*t + X(C,b)*_t) \
/*
* RGBO
*/
#define AddRGBO(A,B,C) ( \
X(A,r) = X(B,r) + X(C,r), \
X(A,g) = X(B,g) + X(C,g), \
X(A,b) = X(B,b) + X(C,b), \
X(A,o) = X(B,o) + X(C,o))
#define SubRGBO(A,B,C) ( \
X(A,r) = X(B,r) - X(C,r), \
X(A,g) = X(B,g) - X(C,g), \
X(A,b) = X(B,b) - X(C,b), \
X(A,o) = X(B,o) - X(C,o))
#define MulRGBO(A,B,C) ( \
X(A,r) = X(B,r) * C, \
X(A,g) = X(B,g) * C, \
X(A,b) = X(B,b) * C, \
X(A,o) = X(B,o) * C)
#define DivRGBO(A,B,C) ( \
X(A,r) = X(B,r) / C, \
X(A,g) = X(B,g) / C, \
X(A,b) = X(B,b) / C, \
X(A,o) = X(B,o) / C)
#define CopyRGBO(A,B) ( \
X(A,r) = X(B,r), \
X(A,g) = X(B,g), \
X(A,b) = X(B,b), \
X(A,o) = X(B,o))
#endif /* _DXI_LEXICAL_H_ */
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
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