re PR fortran/32049 (Support on x86_64 also kind=16)

/
2010-11-13  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
            Tobias Burnus  <burnus@net-b.de>

        PR fortran/32049
        * Makefile.def: Add libquadmath; build it with language=fortran.
        * configure.ac: Add libquadmath.
        * Makefile.tpl: Handle multiple libs in check-[+language+].
        * Makefile.in: Regenerate.
        * configure: Regenerate.

libquadmath/
2010-11-13  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
            Tobias Burnus  <burnus@net-b.de>

        PR fortran/32049
        Initial implementation and checkin.

gcc/fortran/
2010-11-13  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
            Tobias Burnus  <burnus@net-b.de>

        PR fortran/32049
        * gfortranspec.c (find_spec_file): New function.
        (lang_specific_driver): Try to find .spec file and use it.
        * trans-io.c (iocall): Define
        * IOCALL_X_REAL128/COMPLEX128(,write).
        (gfc_build_io_library_fndecls): Build decl for __float128 I/O.
        (transfer_expr): Call __float128 I/O functions.
        * trans-types.c (gfc_init_kinds): Allow kind-16 belonging
        to __float128.

gcc/testsuite/
2010-11-13  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
            Tobias Burnus  <burnus@net-b.de>

        PR fortran/32049
        * gfortran.dg/quad_1.f90: New.
        * lib/gcc-defs.exp (gcc-set-multilib-library-path): Use also
        compiler arguments.
        * lib/gfortran.exp (gfortran_link_flags): Add libquadmath to
        library search path; call gcc-set-multilib-library-path with
        arguments such that libgfortran.spec is found.
        (gfortran_init): Add path for libgfortran.spec to
GFORTRAN_UNDER_TEST.

libgomp/
2010-11-13  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
            Tobias Burnus  <burnus@net-b.de>

        PR fortran/32049
        * configure.ac: 
        * configure: Regenerate.

libgfortran/
2010-11-13  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
            Tobias Burnus  <burnus@net-b.de>

        PR fortran/32049
        * Makefile.am: Add missing pow_r16_i4.c, add transfer128.c,
        link libquadmath, if used.
        * acinclude.m4 (LIBGFOR_CHECK_FLOAT128): Add.
        * configure.ac: Use it, touch spec file.
        * gfortran.map: Add pow_r16_i4 and
        transfer_(real,complex)128(,write) functions.
        * intrinsics/cshift0.c (cshift0): Handle __float128 type.
        * intrinsics/erfc_scaled_inc.c: Ditto.
        * intrinsics/pack_generic.c (pack): Ditto
        * intrinsics/spread_generic.c (spread): Ditto.
        * intrinsics/unpack_generic.c (unpack1): Ditto.
        * io/read.c (convert_real): Ditto.
        * io/transfer.c: Update comments.
        * io/transfer128.c: New file.
        * io/write_float.def (write_float): Handle __float128 type.
        * libgfortran.h: #include quadmath_weak.h, define __builtin_infq
        and nanq.
        * m4/mtype.m4: Handle __float128 type.
        * runtime/in_pack_generic.c (internal_pack): Ditto.
        * runtime/in_unpack_generic.c (internal_unpack): Ditto.
        * kinds-override.h: New file.
        * libgfortran.spec.in: Ditto.
        * generated/pow_r16_i4.c: Generated.
        * Makefile.in: Regenerate.
        * configure: Regenerate.
        * config.h: Regenerate.
        * bessel_r10.c: Regenerate.
        * bessel_r16.c: Regenerate.
        * bessel_r4.c: Regenerate.
        * bessel_r8.c: Regenerate.
        * exponent_r16.c: Regenerate.
        * fraction_r16.c: Regenerate.
        * nearest_r16.c: Regenerate.
        * norm2_r10.c: Regenerate.
        * norm2_r16.c: Regenerate.
        * norm2_r4.c: Regenerate.
        * norm2_r8.c: Regenerate.
        * rrspacing_r16.c: Regenerate.
        * set_exponent_r16.c: Regenerate.
        * spacing_r16.c: Regenerate.


Co-Authored-By: Tobias Burnus <burnus@net-b.de>

From-SVN: r166825

1 files changed, 48 insertions, 0 deletions

diff --git a/libquadmath/math/scalblnq.c b/libquadmath/math/scalblnq.c
new file mode 100644
index 0000000..75997f6
--- /dev/null
+++ b/libquadmath/math/scalblnq.c
@@ -0,0 +1,48 @@
+/* s_scalblnl.c -- long double version of s_scalbn.c.
+ * Conversion to IEEE quad long double by Jakub Jelinek, jj@ultra.linux.cz.
+ */
+   
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#include "quadmath-imp.h"
+
+static const __float128
+two114 = 2.0769187434139310514121985316880384E+34Q, /* 0x4071000000000000, 0 */
+twom114 = 4.8148248609680896326399448564623183E-35Q, /* 0x3F8D000000000000, 0 */
+huge   = 1.0E+4900Q,
+tiny   = 1.0E-4900Q;
+
+__float128
+scalblnq (__float128 x, long int n)
+{
+	int64_t k,hx,lx;
+	GET_FLT128_WORDS64(hx,lx,x);
+        k = (hx>>48)&0x7fff;		/* extract exponent */
+        if (k==0) {				/* 0 or subnormal x */
+            if ((lx|(hx&0x7fffffffffffffffULL))==0) return x; /* +-0 */
+	    x *= two114;
+	    GET_FLT128_MSW64(hx,x);
+	    k = ((hx>>48)&0x7fff) - 114;
+	}
+        if (k==0x7fff) return x+x;		/* NaN or Inf */
+        k = k+n;
+        if (n> 50000 || k > 0x7ffe)
+	  return huge*copysignq(huge,x); /* overflow  */
+	if (n< -50000) return tiny*copysignq(tiny,x); /*underflow*/
+        if (k > 0) 				/* normal result */
+	    {SET_FLT128_MSW64(x,(hx&0x8000ffffffffffffULL)|(k<<48)); return x;}
+        if (k <= -114)
+	  return tiny*copysignq(tiny,x); 	/*underflow*/
+        k += 114;				/* subnormal result */
+	SET_FLT128_MSW64(x,(hx&0x8000ffffffffffffULL)|(k<<48));
+        return x*twom114;
+}