[PATCH 1/2] PR 92463 MPFR modernization in GFortran

[Tobias Burnus]

Hi Janne,

On 11/18/19 9:34 PM, Janne Blomqvist wrote:
> Now that we require a minimum of MPFR 3.1.0+ to build GCC, we can do
> some modernization of the MPFR usage in the GFortran frontend.

OK – thanks for the cleanup.

[For reference, those changes were introduced in MPFR 3.0.0, cf. 
https://www.mpfr.org/mpfr-3.0.0/#changes ; 3.0 and 3.1 also added a 
bunch of new functions, MPFR_RNDA and did remove some undefined behaviour.]

Do you intent update the other places as well? Namely:

> This patch replaces
> 1) GMP_RND* with MPFR_RND*
Also used by: configure.ac, gcc/builtins.c, gcc/fold-const-call.c, 
gcc/gimple-ssa-sprintf.c, gcc/go/…, gcc/real.c, gcc/realmpfr.h, 
gcc/ubsan.c.

2) mp_exp_t with mpfr_exp_t

gcc/realmpfr.c + gcc/go/…

> 3) mp_prec_t with mpfr_prec_t
(only used by gcc/fortran)
> 4) mp_rnd_t with mpfr_rnd_t

gcc/builtins.c, gcc/fold-const-call.c, gcc/realmpfr.c

Cheers,

Tobias

> gcc/fortran/ChangeLog:
>
> 2019-11-18  Janne Blomqvist  <jb@gcc.gnu.org>
>
> 	PR fortran/92463
> 	* arith.c (gfc_mpfr_to_mpz): Change mp_exp_t to mpfr_exp_t.
> 	(gfc_check_real_range): Likewise.
> 	* gfortran.h (GFC_RND_MODE): Change GMP_RNDN to MPFR_RNDN.
> 	* module.c (mio_gmp_real): Change mp_exp_t to mpfr_exp_t.
> 	* simplify.c (degrees_f): Change mp_rnd_t to mpfr_rnd_t.
> 	(radians_f): Likewise.
> 	(fullprec_erfc_scaled): Change mp_prec_t to mpfr_prec_t.
> 	(asympt_erfc_scaled): Likewise.
> 	(gfc_simplify_nearest): Change mp_exp_t to mpfr_exp_t, and
> 	GMP_RND* to MPFR_RND*.
> ---
>   gcc/fortran/arith.c    |  8 ++++----
>   gcc/fortran/gfortran.h |  2 +-
>   gcc/fortran/module.c   |  2 +-
>   gcc/fortran/simplify.c | 20 ++++++++++----------
>   4 files changed, 16 insertions(+), 16 deletions(-)