diff options
Diffstat (limited to 'newlib/libm/ld128/b_tgammal.c')
-rw-r--r-- | newlib/libm/ld128/b_tgammal.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/newlib/libm/ld128/b_tgammal.c b/newlib/libm/ld128/b_tgammal.c new file mode 100644 index 0000000..1c995ab --- /dev/null +++ b/newlib/libm/ld128/b_tgammal.c @@ -0,0 +1,57 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2013 David Chisnall + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <float.h> +#include <math.h> + +/* + * If long double is not the same size as double, then these will lose + * precision and we should emit a warning whenever something links against + * them. + */ +#if (LDBL_MANT_DIG > 53) +#define WARN_IMPRECISE(x) \ + __warn_references(x, # x " has lower than advertised precision"); +#else +#define WARN_IMPRECISE(x) +#endif +/* + * Declare the functions as weak variants so that other libraries providing + * real versions can override them. + */ +#define DECLARE_WEAK(x)\ + __weak_reference(imprecise_## x, x);\ + WARN_IMPRECISE(x) + +#define DECLARE_IMPRECISE(f) \ + long double imprecise_ ## f ## l(long double v) { return f(v); }\ + DECLARE_WEAK(f ## l) + +DECLARE_IMPRECISE(tgamma); |