Similar to various other bugs in this area, some sin and sincos
implementations do not raise the underflow exception for subnormal
arguments, when the result is tiny and inexact. This patch forces the
exception in a similar way to previous fixes.
Tested for x86_64, x86, mips64 and powerpc.
[BZ #16526]
[BZ #16538]
* sysdeps/ieee754/dbl-64/s_sin.c: Include <float.h>.
(__sin): Force underflow exception for arguments with small
absolute value.
* sysdeps/ieee754/flt-32/k_sinf.c: Include <float.h>.
(__kernel_sinf): Force underflow exception for arguments with
small absolute value.
* sysdeps/ieee754/ldbl-128/k_sincosl.c: Include <float.h>.
(__kernel_sincosl): Force underflow exception for arguments with
small absolute value.
* sysdeps/ieee754/ldbl-128/k_sinl.c: Include <float.h>.
(__kernel_sinl): Force underflow exception for arguments with
small absolute value.
* sysdeps/ieee754/ldbl-128ibm/k_sincosl.c: Include <float.h>.
(__kernel_sincosl): Force underflow exception for arguments with
small absolute value.
* sysdeps/ieee754/ldbl-128ibm/k_sinl.c: Include <float.h>.
(__kernel_sinl): Force underflow exception for arguments with
small absolute value.
* sysdeps/ieee754/ldbl-96/k_sinl.c: Include <float.h>.
(__kernel_sinl): Force underflow exception for arguments with
small absolute value.
* sysdeps/powerpc/fpu/k_sinf.c: Include <float.h>.
(__kernel_sinf): Force underflow exception for arguments with
small absolute value.
* math/auto-libm-test-in: Add more tests of sin and sincos.
* math/auto-libm-test-out: Regenerated.
2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
1999-07-15 Jakub Jelinek <jj@ultra.linux.cz>
* math/Makefile: Add t_sincosl and k_sincosl support routines.
* math/math_private.h (__kernel_sincosl): New declaration.
* sysdeps/generic/t_sincosl.c: New file.
* sysdeps/generic/k_sincosl.c: New file.
* sysdeps/ieee754/ldbl-128/k_cosl.c: New file.
* sysdeps/ieee754/ldbl-128/k_sinl.c: New file.
* sysdeps/ieee754/ldbl-128/k_sincosl.c: New file.
* sysdeps/ieee754/ldbl-128/t_sincosl.c: New file.
* sysdeps/ieee754/ldbl-128/e_rem_pio2l.c: New file.
* sysdeps/ieee754/ldbl-128/s_sincosl.c (__sincosl): Use
__kernel_sincosl.
* sysdeps/ieee754/ldbl-128/math_ldbl.h (GET_LDOUBLE_LSW64): New
definition.
