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32 lines
894 B
32 lines
894 B
/*
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* include/bits.h
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*
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* This work was supported by the Director, Office of Science, Division
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* of Mathematical, Information, and Computational Sciences of the
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* U.S. Department of Energy under contract number DE-AC03-76SF00098.
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*
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* Copyright (c) 2000-2001
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*
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* This file defines various routines to get / set bits of a IEEE floating
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* point number. This is used by the library for debugging purposes.
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*/
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#ifndef _QD_BITS_H
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#define _QD_BITS_H
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#include <iostream>
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#include <qd/qd_config.h>
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/* Returns the exponent of the double precision number.
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Returns INT_MIN is x is zero, and INT_MAX if x is INF or NaN. */
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int get_double_expn(double x);
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/* Prints
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SIGN EXPN MANTISSA
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of the given double. If x is NaN, INF, or Zero, this
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prints out the strings NaN, +/- INF, and 0. */
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void print_double_info(std::ostream &os, double x);
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#endif /* _QD_BITS_H */
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