/usr/include/qd/bits.h is in libqd-dev 2.3.11.dfsg-2.2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | /*
* include/bits.h
*
* This work was supported by the Director, Office of Science, Division
* of Mathematical, Information, and Computational Sciences of the
* U.S. Department of Energy under contract number DE-AC03-76SF00098.
*
* Copyright (c) 2000-2001
*
* This file defines various routines to get / set bits of a IEEE floating
* point number. This is used by the library for debugging purposes.
*/
#ifndef _QD_BITS_H
#define _QD_BITS_H
#include <iostream>
#include <qd/qd_config.h>
/* Returns the exponent of the double precision number.
Returns INT_MIN is x is zero, and INT_MAX if x is INF or NaN. */
int get_double_expn(double x);
/* Prints
SIGN EXPN MANTISSA
of the given double. If x is NaN, INF, or Zero, this
prints out the strings NaN, +/- INF, and 0. */
void print_double_info(std::ostream &os, double x);
#endif /* _QD_BITS_H */
|