[PATCH, fortran] Clean-up mpfr (ab)use.

[Steve Kargl <sgk at troutmask dot apl dot washington dot edu>]

The attach patch cleans up some mpfr (ab)use.  It removes
numerous unnecessary function calls and after re-arranging
some of the code eliminates several unnecessary variables.

Bootstrapped and regression tested on x86_64-*-freebsd.

2008-05-30  Steven G. Kargl  <kargls@comcast.net>

	* arith.c (gfc_arith_init_1): Remove now unused r and c variables.
	Cleanup numerical inquiry function initialization.
	(gfc_arith_done_1): Replace multiple mpfr_clear() invocations with
	a single mpfr_clears().
	(gfc_check_real_range): Re-arrange logic to eliminate multiple
	unnecessary branching and assignments.
	(gfc_arith_times): Use mpfr_clears() in preference to multiple
	mpfr_clear().
	(gfc_arith_divide): Ditto.
	(complex_reciprocal): Eliminate now unused variables a, re, im.
	Cleanup the mpfr abuse.  Use mpfr_clears() in preference to
	multiple mpfr_clear().
	(complex_pow): Fix comment whitespace.  Use mpfr_clears() in
	preference to multiple mpfr_clear().

	* simplify.c (gfc_simplify_and): Remove blank line.
	(gfc_simplify_atan2): Move error checking earlier to eliminate
	a now unnecessay gfc_free_expr().
	(gfc_simplify_bessel_j0): Remove unnecessary gfc_set_model_kind().
	(gfc_simplify_bessel_j1): Ditto.
	(gfc_simplify_bessel_jn): Ditto.
 	(gfc_simplify_bessel_y0): Ditto.
	(gfc_simplify_bessel_y1): Ditto.
	(gfc_simplify_bessel_yn): Ditto. 
	(only_convert_cmplx_boz): Eliminate unnecessary duplicate code, and
	combine nested if statement rational expressions.
	(gfc_simplify_cos): Use mpfr_clears() in preference to multiple
	mpfr_clear().
	(gfc_simplify_exp): Ditto.
	(gfc_simplify_fraction): Move gfc_set_model_kind() to after the
	special case of 0.  Use mpfr_clears() in preference to multiple
	mpfr_clear().
	(gfc_simplify_gamma): Eliminate unnecessary gfc_set_model_kind().
 	(gfc_simplify_lgamma): Ditto.
	(gfc_simplify_log10): Ditto.
	(gfc_simplify_log): Move gfc_set_model_kind () inside switch
	statement. Use mpfr_clears() in preference to multiple mpfr_clear().
	(gfc_simplify_mod):  Eliminate now unused variables quot, iquot,
	and term.  Simplify the mpfr magic.
	(gfc_simplify_modulo): Ditto.
	(gfc_simplify_nearest): Eliminate unnecessary gfc_set_model_kind().
	(gfc_simplify_scale): Use mpfr_clears() in preference to multiple
	mpfr_clear().
	(gfc_simplify_sin): Ditto
	(gfc_simplify_sqrt): Ditto
	(gfc_simplify_set_exponent):  Move gfc_set_model_kind() to after the
	special case of 0.  Use mpfr_clears() in preference to multiple
	mpfr_clear().
-- 
Steve

Attachment: mpfr.pat
Description: image/coreldrawpattern