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author | Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> | 2018-06-20 18:15:06 -0300 |
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committer | Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> | 2018-06-20 18:15:06 -0300 |
commit | 5e79e0292bfb03f40e43379fd92581ad8eae9cb8 (patch) | |
tree | 692717620d693050370f8e6221010c1a9cc6b0f0 /math/s_significand_template.c | |
parent | badba23cacdec4c63bb0ac20fa3f90cc629f884c (diff) |
Add a generic significand implementation
Create a template for significand.
* math/Makefile (libm-calls): Move s_significandF to...
(gen-libm-calls): ... here.
* math/s_significand_template.c: New file.
* math/s_significand.c: Removed.
* math/s_significandf.c: Removed.
* math/s_significandl.c: Removed.
* sysdeps/ieee754/ldbl-opt/s_significand.c: Removed.
* sysdeps/ieee754/ldbl-opt/s_significandl.c: Removed.
Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Diffstat (limited to 'math/s_significand_template.c')
-rw-r--r-- | math/s_significand_template.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/math/s_significand_template.c b/math/s_significand_template.c new file mode 100644 index 0000000000..0c5ad8d14b --- /dev/null +++ b/math/s_significand_template.c @@ -0,0 +1,33 @@ +/* Return the mantissa of a floating-point number. + Copyright (C) 2018 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, see + <http://www.gnu.org/licenses/>. */ + +/* + * significand(x) computes just + * scalb(x, (FLOAT) - ilogb(x)), + * for exercising the fraction-part(F) IEEE 754-1985 test vector. + */ + +#include <math.h> +#include <math_private.h> + +FLOAT +M_DECL_FUNC (__significand) (FLOAT x) +{ + return M_SUF (__ieee754_scalb) (x,(FLOAT) - M_SUF (__ilogb) (x)); +} +declare_mgen_alias (__significand, significand) |