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| author | Bruno Haible <bruno@clisp.org> | 2011-10-08 23:55:44 +0200 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2011-10-08 23:55:44 +0200 |
| commit | a5766f2b114a3a8ca55f7257aa9eef8b5ddc466a (patch) | |
| tree | 7a684a16bfa59ac6e6e32d312e2a418b3d0abf86 /m4/atanf.m4 | |
| parent | 50ef96d5a5201fa07917adcf7a118cb45d4de80a (diff) | |
| download | gnulib-a5766f2b114a3a8ca55f7257aa9eef8b5ddc466a.tar.gz | |
New module 'atanf'.
* lib/math.in.h (atanf): New declaration.
* lib/atanf.c: New file.
* m4/atanf.m4: New file.
* m4/math_h.m4 (gl_MATH_H): Test whether atanf is declared.
(gl_MATH_H_DEFAULTS): Initialize GNULIB_ATANF, HAVE_ATANF.
* modules/math (Makefile.am): Substitute GNULIB_ATANF, HAVE_ATANF.
* modules/atanf: New file.
* tests/test-math-c++.cc: Check the declaration of atanf.
* doc/posix-functions/atanf.texi: Mention the new module.
Diffstat (limited to 'm4/atanf.m4')
| -rw-r--r-- | m4/atanf.m4 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/m4/atanf.m4 b/m4/atanf.m4 new file mode 100644 index 0000000000..e64ba04587 --- /dev/null +++ b/m4/atanf.m4 @@ -0,0 +1,25 @@ +# atanf.m4 serial 1 +dnl Copyright (C) 2011 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_FUNC_ATANF], +[ + AC_REQUIRE([gl_MATH_H_DEFAULTS]) + AC_REQUIRE([gl_FUNC_ATAN]) + + dnl Test whether atanf() exists. Assume that atanf(), if it exists, is + dnl defined in the same library as atan(). + save_LIBS="$LIBS" + LIBS="$LIBS $ATAN_LIBM" + AC_CHECK_FUNCS([atanf]) + LIBS="$save_LIBS" + if test $ac_cv_func_atanf = yes; then + ATANF_LIBM="$ATAN_LIBM" + else + HAVE_ATANF=0 + ATANF_LIBM="$ATAN_LIBM" + fi + AC_SUBST([ATANF_LIBM]) +]) |