diff options
Diffstat (limited to 'math')
| -rw-r--r-- | math/Makefile | 4 | ||||
| -rw-r--r-- | math/test-powl.c | 51 |
2 files changed, 54 insertions, 1 deletions
diff --git a/math/Makefile b/math/Makefile index 7e3a626c63..45954e2e87 100644 --- a/math/Makefile +++ b/math/Makefile @@ -90,7 +90,8 @@ distribute += $(filter-out $(generated),$(long-m-yes:=.c) $(long-c-yes:=.c)) # Rules for the test suite. tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \ test-misc test-fpucw tst-definitions test-tgmath test-tgmath-ret \ - bug-nextafter bug-nexttoward bug-tgmath1 test-tgmath-int test-tgmath2 + bug-nextafter bug-nexttoward bug-tgmath1 test-tgmath-int \ + test-tgmath2 test-powl # We do the `long double' tests only if this data type is available and # distinct from `double'. test-longdouble-yes = test-ldouble test-ildoubl @@ -131,6 +132,7 @@ CFLAGS-test-ldouble.c = -fno-inline -ffloat-store -fno-builtin CFLAGS-test-tgmath.c = -fno-builtin CFLAGS-test-tgmath2.c = -fno-builtin CFLAGS-test-tgmath-ret.c = -fno-builtin +CFLAGS-test-powl.c = -fno-builtin CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \ -DTEST_FAST_MATH -fno-builtin CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \ diff --git a/math/test-powl.c b/math/test-powl.c new file mode 100644 index 0000000000..960f2167ca --- /dev/null +++ b/math/test-powl.c @@ -0,0 +1,51 @@ +/* Test for powl + Copyright (C) 2011 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 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <stdio.h> +#include <math.h> +#include <float.h> +#include <ieee754.h> + +int +main (void) +{ + int result = 0; + +#ifndef NO_LONG_DOUBLE +# if LDBL_MANT_DIG == 64 + { + long double x = 1e-20; + union ieee854_long_double u; + u.ieee.mantissa0 = 1; + u.ieee.mantissa1 = 1; + u.ieee.exponent = 0; + u.ieee.negative = 0; + (void) powl (0.2, u.d); + x = powl (x, 1.5); + if (fabsl (x - 1e-30) > 1e-10) + { + printf ("powl (1e-20, 1.5): wrong result: %Lg\n", x); + result = 1; + } + } +# endif +#endif + + return result; +} |