diff options
Diffstat (limited to 'gcc/fortran/arith.c')
| -rw-r--r-- | gcc/fortran/arith.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/gcc/fortran/arith.c b/gcc/fortran/arith.c index 766169f..53f1262 100644 --- a/gcc/fortran/arith.c +++ b/gcc/fortran/arith.c @@ -75,6 +75,7 @@ gfc_set_model (mpfr_t x) mpfr_set_default_prec (mpfr_get_prec (x)); } +#if !defined(MPFR_VERSION_MAJOR) /* Calculate atan2 (y, x) atan2(y, x) = atan(y/x) if x > 0, @@ -124,7 +125,7 @@ arctangent2 (mpfr_t y, mpfr_t x, mpfr_t result) mpfr_clear (t); } - +#endif /* Given an arithmetic error code, return a pointer to a string that explains the error. */ @@ -407,6 +408,7 @@ gfc_check_real_range (mpfr_t p, int kind) } else if (mpfr_cmp (q, gfc_real_kinds[i].tiny) < 0) { +#if !defined(MPFR_VERSION_MAJOR) /* MPFR operates on a number with a given precision and enormous exponential range. To represent subnormal numbers, the exponent is allowed to become smaller than emin, but always retains the full @@ -428,14 +430,31 @@ gfc_check_real_range (mpfr_t p, int kind) sprintf (s, "0.%sE%d", bin, (int) e); mpfr_set_str (q, s, gfc_real_kinds[i].radix, GMP_RNDN); + gfc_free (s); + gfc_free (bin); +#else + mp_exp_t emin, emax; + + /* Save current values of emin and emax. */ + emin = mpfr_get_emin (); + emax = mpfr_get_emax (); + + /* Set emin and emax for the current model number. */ + mpfr_set_emin ((mp_exp_t) gfc_real_kinds[i].min_exponent - 1); + mpfr_set_emax ((mp_exp_t) gfc_real_kinds[i].max_exponent - 1); + mpfr_subnormalize (q, 0, GFC_RND_MODE); + + /* Reset emin and emax. */ + mpfr_set_emin (emin); + mpfr_set_emax (emax); +#endif + + /* Copy sign if needed. */ if (mpfr_sgn (p) < 0) mpfr_neg (p, q, GMP_RNDN); else mpfr_set (p, q, GMP_RNDN); - gfc_free (s); - gfc_free (bin); - retval = ARITH_OK; } else |