stdioext: Add support for musl libc. * m4/fbufmode.m4 (gl_FUNC_FBUFMODE): Test whether __fbufsize exists. * lib/fbufmode.c (fbufmode): Add conditional code for musl. * m4/fseterr.m4: New file. * lib/fseterr.h (fseterr): Define as an alias of __fseterr if that function exists. * modules/fseterr (Files): Add m4/fseterr.m4. (configure.ac): Invoke gl_FUNC_FSETERR. Compile fseterr.c if __fseterr does not exist. (Makefile.am): Remove fseterr.c from lib_SOURCES. * lib/freadable.h: Update comment. * lib/fwritable.h: Update comment. * lib/freading.h: Update comment. * lib/fwriting.h: Update comment. * m4/freadahead.m4: New file. * lib/freadahead.h (freadahead): Define as an alias of __freadahead if that function exists. * modules/freadahead (Files): Add m4/freadahead.m4. (configure.ac): Invoke gl_FUNC_FREADAHEAD. Compile freadahead.c if __freadahead does not exist. (Makefile.am): Remove freadahead.c from lib_SOURCES. * m4/freadptr.m4: New file. * lib/freadptr.h (freadptr): Define as an alias of __freadptr if that function exists. * modules/freadptr (Files): Add m4/freadptr.m4. (configure.ac): Invoke gl_FUNC_FREADPTR. Compile freadptr.c if __freadptr does not exist. (Makefile.am): Remove freadptr.c from lib_SOURCES. * m4/freadseek.m4: New file. * lib/freadseek.c (freadptrinc): Use __freadptrinc if that function exists. * modules/freadseek (Files): Add m4/freadseek.m4. (configure.ac): Invoke gl_FUNC_FREADSEEK. * lib/fpurge.c (fpurge): Update comment. Reported by and with help from Rich Felker <dalias@aerifal.cx>.

Description:
sinl() function: sine function with long double argument.

Files:
lib/sinl.c
lib/trigl.h
lib/sincosl.c
lib/trigl.c
m4/sinl.m4

Depends-on:
math
extensions
sin             [test $HAVE_SINL = 0 && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1]
float           [test $HAVE_SINL = 0 && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
isnanl          [test $HAVE_SINL = 0 && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
floor           [test $HAVE_SINL = 0 && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
floorl          [test $HAVE_SINL = 0 && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]

configure.ac:
gl_FUNC_SINL
if test $HAVE_SINL = 0; then
  AC_LIBOBJ([sinl])
  if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0; then
    AC_LIBOBJ([sincosl])
    AC_LIBOBJ([trigl])
  fi
fi
gl_MATH_MODULE_INDICATOR([sinl])

Makefile.am:

Include:
<math.h>

Link:
$(SINL_LIBM)

License:
LGPL

Maintainer:
Paolo Bonzini