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52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/* Test for powl
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Copyright (C) 2011 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdio.h>
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#include <math.h>
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#include <float.h>
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#include <ieee754.h>
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int
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main (void)
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{
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int result = 0;
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#ifndef NO_LONG_DOUBLE
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# if LDBL_MANT_DIG == 64
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{
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long double x = 1e-20;
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union ieee854_long_double u;
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u.ieee.mantissa0 = 1;
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u.ieee.mantissa1 = 1;
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u.ieee.exponent = 0;
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u.ieee.negative = 0;
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(void) powl (0.2, u.d);
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x = powl (x, 1.5);
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if (fabsl (x - 1e-30) > 1e-10)
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{
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printf ("powl (1e-20, 1.5): wrong result: %Lg\n", x);
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result = 1;
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}
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}
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# endif
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#endif
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return result;
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}
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