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[Fortran] PR57496 use finiteq etc. for __float in write_float.def

Message ID 51A9DD99.6040109@net-b.de
State New
Headers show

Commit Message

Tobias Burnus June 1, 2013, 11:40 a.m. UTC 
Found when looking at the issue of the PR, but unrelated.

For __float128, we have to use the libquadmath functions - not the "long 
double" ones.

The patch is rather obvious, though I wonder whether it could clash with 
some #defines of the system headers on some systems.

Build and regtested on x86-64-gnu-linux.
OK for the trunk?

Tobias
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Patch

2013-06-01  Tobias Burnus  <burnus@net-b.de>

	PR fortran/57496
	* io/write_float.def (ISFINITE2Q, ISFINITE2, ISFINITE2L, ISFINITE,
	SIGNBIT2Q, SIGNBIT2, SIGNBIT2L, SIGNBIT, ISNAN2Q, ISNAN2, ISNAN2L,
	ISNAN): New macros.
	(WRITE_FLOAT): Use them.

diff --git a/libgfortran/io/write_float.def b/libgfortran/io/write_float.def
index a157f0b..4f0fa72 100644
--- a/libgfortran/io/write_float.def
+++ b/libgfortran/io/write_float.def
@@ -961,6 +961,34 @@  __qmath_(quadmath_snprintf) (buffer, size, "%+-#.*Qf", \
 #endif
 
 
+#if defined(GFC_REAL_16_IS_FLOAT128)
+#define ISFINITE2Q(val) finiteq(val)
+#endif
+#define ISFINITE2(val) isfinite(val)
+#define ISFINITE2L(val) isfinite(val)
+
+#define ISFINITE(suff,val) TOKENPASTE(ISFINITE2,suff)(val)
+
+
+#if defined(GFC_REAL_16_IS_FLOAT128)
+#define SIGNBIT2Q(val) signbitq(val)
+#endif
+#define SIGNBIT2(val) signbit(val)
+#define SIGNBIT2L(val) signbit(val)
+
+#define SIGNBIT(suff,val) TOKENPASTE(SIGNBIT2,suff)(val)
+
+
+#if defined(GFC_REAL_16_IS_FLOAT128)
+#define ISNAN2Q(val) isnanq(val)
+#endif
+#define ISNAN2(val) isnan(val)
+#define ISNAN2L(val) isnan(val)
+
+#define ISNAN(suff,val) TOKENPASTE(ISNAN2,suff)(val)
+
+
+
 /* Generate corresponding I/O format for FMT_G and output.
    The rules to translate FMT_G to FMT_E or FMT_F from DEC fortran
    LRM (table 11-2, Chapter 11, "I/O Formatting", P11-25) is:
@@ -1194,10 +1222,10 @@  determine_en_precision (st_parameter_dt *dtp, const fnode *f,
 {\
 	GFC_REAL_ ## x tmp;\
 	tmp = * (GFC_REAL_ ## x *)source;\
-	sign_bit = signbit (tmp);\
-	if (!isfinite (tmp))\
+	sign_bit = SIGNBIT (y,tmp);\
+	if (!ISFINITE (y,tmp))\
 	  { \
-	    write_infnan (dtp, f, isnan (tmp), sign_bit);\
+	    write_infnan (dtp, f, ISNAN (y,tmp), sign_bit);\
 	    return;\
 	  }\
 	tmp = sign_bit ? -tmp : tmp;\