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* simplify.c (gfc_simplify_abs): Use mpfr_hypot for CABS. 

From-SVN: r88647
This commit is contained in:
Tobias Schlüter 2004-10-07 01:16:43 +02:00 committed by Tobias Schlüter
parent 9e749a8b42
commit c45abcaf8f
2 changed files with 4 additions and 11 deletions
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2
gcc/fortran/ChangeLog
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@ -4,6 +4,8 @@
* simplify.c (twos_complement): New function.
(gfc_simplify_ishft, gfc_simplify_ishftc): Revise.
* simplify.c (gfc_simplify_abs): Use mpfr_hypot for CABS.
2004-10-06 Paul Brook <paul@codesourcery.com>
* trans-stmt.c (gfc_trans_simple_do): New function.

13
gcc/fortran/simplify.c
View File

@ -176,7 +176,6 @@ gfc_expr *
gfc_simplify_abs (gfc_expr * e)
{
gfc_expr *result;
mpfr_t a, b;
if (e->expr_type != EXPR_CONSTANT)
return NULL;
@ -203,17 +202,9 @@ gfc_simplify_abs (gfc_expr * e)
result = gfc_constant_result (BT_REAL, e->ts.kind, &e->where);
gfc_set_model_kind (e->ts.kind);
mpfr_init (a);
mpfr_init (b);
/* FIXME: Possible numerical problems. */
mpfr_mul (a, e->value.complex.r, e->value.complex.r, GFC_RND_MODE);
mpfr_mul (b, e->value.complex.i, e->value.complex.i, GFC_RND_MODE);
mpfr_add (a, a, b, GFC_RND_MODE);
mpfr_sqrt (result->value.real, a, GFC_RND_MODE);
mpfr_clear (a);
mpfr_clear (b);
mpfr_hypot (result->value.real, e->value.complex.r,
e->value.complex.i, GFC_RND_MODE);
result = range_check (result, "CABS");
break;