fb0a0e1591
PR libfortran/33583 PR libfortran/33698 * intrinsics/c99_functions.c (tgamma, tgammaf, lgamma, lgammaf): New fallback functions. * c99_protos.h (tgamma, tgammaf, lgamma, lgammaf): New prototypes. * configure.ac: Add checks for tgamma, tgammaf, tgammal, lgamma, lgammaf and lgammal. * config.h.in: Regenerate. * configure: Regenerate. From-SVN: r130245