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glibc/math/libm-test-fmaximum_mag_num.inc

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Add fmaximum, fminimum functions C2X adds new <math.h> functions for floating-point maximum and minimum, corresponding to the new operations that were added in IEEE 754-2019 because of concerns about the old operations not being associative in the presence of signaling NaNs. fmaximum and fminimum handle NaNs like most <math.h> functions (any NaN argument means the result is a quiet NaN). fmaximum_num and fminimum_num handle both quiet and signaling NaNs the way fmax and fmin handle quiet NaNs (if one argument is a number and the other is a NaN, return the number), but still raise "invalid" for a signaling NaN argument, making them exceptions to the normal rule that a function with a floating-point result raising "invalid" also returns a quiet NaN. fmaximum_mag, fminimum_mag, fmaximum_mag_num and fminimum_mag_num are corresponding functions returning the argument with greatest or least absolute value. All these functions also treat +0 as greater than -0. There are also corresponding <tgmath.h> type-generic macros. Add these functions to glibc. The implementations use type-generic templates based on those for fmax, fmin, fmaxmag and fminmag, and test inputs are based on those for those functions with appropriate adjustments to the expected results. The RISC-V maintainers might wish to add optimized versions of fmaximum_num and fminimum_num (for float and double), since RISC-V (F extension version 2.2 and later) provides instructions corresponding to those functions - though it might be at least as useful to add architecture-independent built-in functions to GCC and teach the RISC-V back end to expand those functions inline, which is what you generally want for functions that can be implemented with a single instruction. Tested for x86_64 and x86, and with build-many-glibcs.py.
2021-09-28 23:31:35 +00:00
/* Test fmaximum_mag_num.
Update copyright dates with scripts/update-copyrights I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 18:54:23 +00:00
Copyright (C) 1997-2022 Free Software Foundation, Inc.
Add fmaximum, fminimum functions C2X adds new <math.h> functions for floating-point maximum and minimum, corresponding to the new operations that were added in IEEE 754-2019 because of concerns about the old operations not being associative in the presence of signaling NaNs. fmaximum and fminimum handle NaNs like most <math.h> functions (any NaN argument means the result is a quiet NaN). fmaximum_num and fminimum_num handle both quiet and signaling NaNs the way fmax and fmin handle quiet NaNs (if one argument is a number and the other is a NaN, return the number), but still raise "invalid" for a signaling NaN argument, making them exceptions to the normal rule that a function with a floating-point result raising "invalid" also returns a quiet NaN. fmaximum_mag, fminimum_mag, fmaximum_mag_num and fminimum_mag_num are corresponding functions returning the argument with greatest or least absolute value. All these functions also treat +0 as greater than -0. There are also corresponding <tgmath.h> type-generic macros. Add these functions to glibc. The implementations use type-generic templates based on those for fmax, fmin, fmaxmag and fminmag, and test inputs are based on those for those functions with appropriate adjustments to the expected results. The RISC-V maintainers might wish to add optimized versions of fmaximum_num and fminimum_num (for float and double), since RISC-V (F extension version 2.2 and later) provides instructions corresponding to those functions - though it might be at least as useful to add architecture-independent built-in functions to GCC and teach the RISC-V back end to expand those functions inline, which is what you generally want for functions that can be implemented with a single instruction. Tested for x86_64 and x86, and with build-many-glibcs.py.
2021-09-28 23:31:35 +00:00
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, see
<https://www.gnu.org/licenses/>. */
#include "libm-test-driver.c"
static const struct test_ff_f_data fmaximum_mag_num_test_data[] =
{
TEST_ff_f (fmaximum_mag_num, 0, 0, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, minus_zero, minus_zero, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, 0, minus_zero, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, minus_zero, 0, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, min_subnorm_value, min_subnorm_value, min_subnorm_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, min_subnorm_value, -min_subnorm_value, min_subnorm_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -min_subnorm_value, min_subnorm_value, min_subnorm_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -min_subnorm_value, -min_subnorm_value, -min_subnorm_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, min_value, min_value, min_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, min_value, -min_value, min_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -min_value, min_value, min_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -min_value, -min_value, -min_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, max_value, max_value, max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, max_value, -max_value, max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -max_value, max_value, max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -max_value, -max_value, -max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, max_value, min_value, max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, max_value, -min_value, max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -max_value, min_value, -max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -max_value, -min_value, -max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, min_value, max_value, max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, min_value, -max_value, -max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -min_value, max_value, max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -min_value, -max_value, -max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, 9, 0, 9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, 0, 9, 9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -9, 0, -9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, 0, -9, -9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, plus_infty, 9, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, 0, plus_infty, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -9, plus_infty, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, plus_infty, -9, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, minus_infty, 9, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, minus_infty, -9, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, 9, minus_infty, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -9, minus_infty, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, 0, qnan_value, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, 0, -qnan_value, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, minus_zero, qnan_value, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, minus_zero, -qnan_value, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, 9, qnan_value, 9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, 9, -qnan_value, 9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -9, qnan_value, -9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -9, -qnan_value, -9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, 0, snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, 0, -snan_value, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, minus_zero, snan_value, minus_zero, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, minus_zero, -snan_value, minus_zero, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, 9, snan_value, 9, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, 9, -snan_value, 9, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -9, snan_value, -9, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -9, -snan_value, -9, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, qnan_value, 0, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -qnan_value, 0, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, qnan_value, minus_zero, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -qnan_value, minus_zero, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, qnan_value, 9, 9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -qnan_value, 9, 9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, qnan_value, -9, -9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -qnan_value, -9, -9, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, snan_value, 0, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -snan_value, 0, 0, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, snan_value, minus_zero, minus_zero, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -snan_value, minus_zero, minus_zero, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, snan_value, 9, 9, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -snan_value, 9, 9, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, snan_value, -9, -9, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -snan_value, -9, -9, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, plus_infty, qnan_value, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, plus_infty, -qnan_value, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, minus_infty, qnan_value, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, minus_infty, -qnan_value, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, plus_infty, snan_value, plus_infty, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, plus_infty, -snan_value, plus_infty, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, minus_infty, snan_value, minus_infty, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, minus_infty, -snan_value, minus_infty, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, qnan_value, plus_infty, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -qnan_value, plus_infty, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, qnan_value, minus_infty, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -qnan_value, minus_infty, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, snan_value, plus_infty, plus_infty, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -snan_value, plus_infty, plus_infty, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, snan_value, minus_infty, minus_infty, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -snan_value, minus_infty, minus_infty, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, qnan_value, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, qnan_value, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -qnan_value, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, -qnan_value, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
TEST_ff_f (fmaximum_mag_num, qnan_value, snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, qnan_value, -snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -qnan_value, snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -qnan_value, -snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, snan_value, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, snan_value, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -snan_value, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -snan_value, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, snan_value, snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, snan_value, -snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -snan_value, snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
TEST_ff_f (fmaximum_mag_num, -snan_value, -snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
};
static void
fmaximum_mag_num_test (void)
{
ALL_RM_TEST (fmaximum_mag_num, 1, fmaximum_mag_num_test_data, RUN_TEST_LOOP_ff_f, END);
}
static void
do_test (void)
{
fmaximum_mag_num_test ();
}
/*
* Local Variables:
* mode:c
* End:
*/
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