New module 'tanf'. * lib/math.in.h (tanf): New declaration. * lib/tanf.c: New file. * m4/tanf.m4: New file. * m4/math_h.m4 (gl_MATH_H): Test whether tanf is declared. (gl_MATH_H_DEFAULTS): Initialize GNULIB_TANF, HAVE_TANF. * modules/math (Makefile.am): Substitute GNULIB_TANF, HAVE_TANF. * modules/tanf: New file. * tests/test-math-c++.cc: Check the declaration of tanf. * doc/posix-functions/tanf.texi: Mention the new module.

Description:
tanf() function: tangent function.

Files:
lib/tanf.c
m4/tanf.m4

Depends-on:
math
tan             [test $HAVE_TANF = 0]

configure.ac:
gl_FUNC_TANF
if test $HAVE_TANF = 0; then
  AC_LIBOBJ([tanf])
fi
gl_MATH_MODULE_INDICATOR([tanf])

Makefile.am:

Include:
<math.h>

Link:
$(TANF_LIBM)

License:
LGPL

Maintainer:
Bruno Haible