[Bug libfortran/126305] Many gfortran tests fail due to excess errors on HP-UX (undefined asinl, atanl, atan2l, acosl)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126305

--- Comment #21 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by John David Anglin <[email protected]>:

https://gcc.gnu.org/g:7c89181457dafe48203c0ce31a429c3e887dd378

commit r17-2676-g7c89181457dafe48203c0ce31a429c3e887dd378
Author: John David Anglin <[email protected]>
Date:   Thu Jul 23 22:06:50 2026 -0400

    libgfortran: Add additional long double math support for hppa64-hpux*

    On hppa-hpux, we lack support for C99 math routines but the long
    double type conforms to the standard 16-byte IEEE (IEC 60559)
    specification.  This allows us to use the quad routines from
    libquadmath.

    2026-07-22  John David Anglin  <[email protected]>

    libgfortran/ChangeLog:

            PR libfortran/126305
            * c99_protos.h (acosl, acoshl, asinl, asinhl,atan2l, atanl,
            atanhl, ceill, cosl, coshl, expl, hypotl, logl, sinl, sinhl,
            sqrtl, tanl, tanhl, truncl, nextafterl, powl, erfl, erfcl):
            Add declarations.
            * configure.ac (powl, erfl): Add GCC_CHECK_MATH_FUNCs.
            * configure: Regenerate.
            * config.h.in: Regenerate.
            * intrinsics/c99_functions.c: Include math_imp.h.  Move code
            to manipulate the floating-point type to math_imp.h.
            (erfl, erfcl, acosl, acoshl, asinl, asinhl, atan2l, atanl,
            atanhl, ceill, cosl, coshl, expl, floorl, fmodl, hypotl,
            logl, sinl, sinhl, sqrtl, tanl, tanhl, truncl, nextafterl,
            powl, log10l): Implement.
            (frexpl): Move code to intrinsics/frexpl_16.c.
            (scalbnl): Move code to intrinsics/scalbnl_16.c.
            * intrinsics/ceill_16.c: New.
            * intrinsics/floorl_16.c: New.
            * intrinsics/frexpl_16.c: New.
            * intrinsics/math_imp.h: New.
            * intrinsics/nextafterl_16.c: New.
            * intrinsics/scalbnl_16.c: New.
            * intrinsics/truncl_16.c: New.
            * libgfortran.h (USE_LIBQUADLIB): Define on hppa-hpux.