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git-svn-id: file:///srv/svn/repos/haiku/buildtools/trunk@29042 a95241bf-73f2-0310-859d-f6bbb57e9c96
93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
/* mpfr_min -- min and max of x, y
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Copyright 2001, 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
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Contributed by the Arenaire and Cacao projects, INRIA.
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This file is part of the MPFR Library.
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The MPFR Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The MPFR Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the MPFR Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "mpfr-impl.h"
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/* The computation of z=min(x,y)
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z=x if x <= y
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z=y if x > y
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*/
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int
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mpfr_min (mpfr_ptr z, mpfr_srcptr x, mpfr_srcptr y, mp_rnd_t rnd_mode)
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{
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if (MPFR_ARE_SINGULAR(x,y))
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{
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if (MPFR_IS_NAN(x) && MPFR_IS_NAN(y) )
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{
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MPFR_SET_NAN(z);
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MPFR_RET_NAN;
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}
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else if (MPFR_IS_NAN(x))
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return mpfr_set(z, y, rnd_mode);
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else if (MPFR_IS_NAN(y))
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return mpfr_set(z, x, rnd_mode);
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else if (MPFR_IS_ZERO(x) && MPFR_IS_ZERO(y))
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{
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if (MPFR_IS_NEG(x))
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return mpfr_set(z, x, rnd_mode);
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else
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return mpfr_set(z, y, rnd_mode);
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}
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}
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if (mpfr_cmp(x,y) <= 0)
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return mpfr_set(z, x, rnd_mode);
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else
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return mpfr_set(z, y, rnd_mode);
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}
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/* The computation of z=max(x,y)
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z=x if x >= y
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z=y if x < y
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*/
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int
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mpfr_max (mpfr_ptr z, mpfr_srcptr x, mpfr_srcptr y, mp_rnd_t rnd_mode)
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{
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if (MPFR_ARE_SINGULAR(x,y))
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{
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if (MPFR_IS_NAN(x) && MPFR_IS_NAN(y) )
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{
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MPFR_SET_NAN(z);
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MPFR_RET_NAN;
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}
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else if (MPFR_IS_NAN(x))
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return mpfr_set(z, y, rnd_mode);
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else if (MPFR_IS_NAN(y))
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return mpfr_set(z, x, rnd_mode);
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else if (MPFR_IS_ZERO(x) && MPFR_IS_ZERO(y))
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{
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if (MPFR_IS_NEG(x))
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return mpfr_set(z, y, rnd_mode);
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else
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return mpfr_set(z, x, rnd_mode);
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}
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}
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if (mpfr_cmp(x,y) <= 0)
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return mpfr_set(z, y, rnd_mode);
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else
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return mpfr_set(z, x, rnd_mode);
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}
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