diff options
Diffstat (limited to 'stdlib/erand48_r.c')
-rw-r--r-- | stdlib/erand48_r.c | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/stdlib/erand48_r.c b/stdlib/erand48_r.c deleted file mode 100644 index 8f6d3fad61..0000000000 --- a/stdlib/erand48_r.c +++ /dev/null @@ -1,47 +0,0 @@ -/* Copyright (C) 1995-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <ieee754.h> -#include <stdlib.h> -#include <limits.h> - - -int -__erand48_r (unsigned short int xsubi[3], struct drand48_data *buffer, - double *result) -{ - union ieee754_double temp; - - /* Compute next state. */ - if (__drand48_iterate (xsubi, buffer) < 0) - return -1; - - /* Construct a positive double with the 48 random bits distributed over - its fractional part so the resulting FP number is [0.0,1.0). */ - - temp.ieee.negative = 0; - temp.ieee.exponent = IEEE754_DOUBLE_BIAS; - temp.ieee.mantissa0 = (xsubi[2] << 4) | (xsubi[1] >> 12); - temp.ieee.mantissa1 = ((xsubi[1] & 0xfff) << 20) | (xsubi[0] << 4); - - /* Please note the lower 4 bits of mantissa1 are always 0. */ - *result = temp.d - 1.0; - - return 0; -} -weak_alias (__erand48_r, erand48_r) |