From abfbdde177c3a7155070dda1b2cdc8292054cc26 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 14 Jul 1999 00:54:57 +0000 Subject: Update. --- sysdeps/ieee754/flt-32/mpn2flt.c | 42 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 sysdeps/ieee754/flt-32/mpn2flt.c (limited to 'sysdeps/ieee754/flt-32/mpn2flt.c') diff --git a/sysdeps/ieee754/flt-32/mpn2flt.c b/sysdeps/ieee754/flt-32/mpn2flt.c new file mode 100644 index 0000000000..a409b456b0 --- /dev/null +++ b/sysdeps/ieee754/flt-32/mpn2flt.c @@ -0,0 +1,42 @@ +/* Copyright (C) 1995, 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include "gmp.h" +#include "gmp-impl.h" +#include +#include + +/* Convert a multi-precision integer of the needed number of bits (24 for + float) and an integral power of two to a `float' in IEEE754 single- + precision format. */ + +float +__mpn_construct_float (mp_srcptr frac_ptr, int expt, int sign) +{ + union ieee754_float u; + + u.ieee.negative = sign; + u.ieee.exponent = expt + IEEE754_FLOAT_BIAS; +#if BITS_PER_MP_LIMB > FLT_MANT_DIG + u.ieee.mantissa = frac_ptr[0] & ((1 << FLT_MANT_DIG) - 1); +#else + #error "mp_limb size " BITS_PER_MP_LIMB "not accounted for" +#endif + + return u.f; +} -- cgit 1.4.1