/usr/include/Unidraw/Graphic/util.h is in ivtools-dev 1.2.11a1-11.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 1990, 1991 Stanford University
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Stanford not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. Stanford makes no representations about
* the suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* STANFORD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
* IN NO EVENT SHALL STANFORD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Various useful types and functions.
*/
#ifndef unidraw_graphic_util_h
#define unidraw_graphic_util_h
#include <IV-2_6/InterViews/defs.h>
#include <Unidraw/enter-scope.h>
#include <OS/memory.h>
#include <math.h>
#include <IV-2_6/_enter.h>
inline void exch (int& a, int& b) {
int temp = a;
a = b;
b = temp;
}
inline int square(int a) { return a *= a; }
inline float square(float a) { return a *= a; }
inline float Distance(Coord x0, Coord y0, Coord x1, Coord y1) {
return hypotf(x0 - x1, y0 - y1);
}
inline void ArrayCopy (
const Coord* x, const Coord* y, int n, Coord* newx, Coord* newy
) {
Memory::copy(x, newx, n * sizeof(Coord));
Memory::copy(y, newy, n * sizeof(Coord));
}
inline void ArrayDup (
const Coord* x, const Coord* y, int n, Coord*& newx, Coord*& newy
) {
newx = new Coord[n];
newy = new Coord[n];
Memory::copy(x, newx, n * sizeof(Coord));
Memory::copy(y, newy, n * sizeof(Coord));
}
inline void Midpoint (
double x0, double y0, double x1, double y1, double& mx, double& my
) {
mx = (x0 + x1) / 2.0;
my = (y0 + y1) / 2.0;
}
inline void ThirdPoint (
double x0, double y0, double x1, double y1, double& tx, double& ty
) {
tx = (2*x0 + x1) / 3.0;
ty = (2*y0 + y1) / 3.0;
}
#include <IV-2_6/_leave.h>
#endif
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