/

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.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@166825 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 66 insertions, 0 deletions

diff --git a/libquadmath/math/atanhq.c b/libquadmath/math/atanhq.c
new file mode 100644
index 00000000000..73db957d3b0
--- /dev/null
+++ b/libquadmath/math/atanhq.c
@@ -0,0 +1,66 @@
+/* s_atanhl.c -- __float128 version of s_atan.c.
+ * Conversion to __float128 by Ulrich Drepper,
+ * Cygnus Support, drepper@cygnus.com.
+ */
+
+/*
+ * ====================================================
+ * 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.
+ * ====================================================
+ */
+
+/* __ieee754_atanhl(x)
+ * Method :
+ *    1.Reduced x to positive by atanh(-x) = -atanh(x)
+ *    2.For x>=0.5
+ *                   1              2x                          x
+ *	atanhl(x) = --- * log(1 + -------) = 0.5 * log1p(2 * --------)
+ *                   2             1 - x                      1 - x
+ *
+ * 	For x<0.5
+ *	atanhl(x) = 0.5*log1pl(2x+2x*x/(1-x))
+ *
+ * Special cases:
+ *	atanhl(x) is NaN if |x| > 1 with signal;
+ *	atanhl(NaN) is that NaN with no signal;
+ *	atanhl(+-1) is +-INF with signal.
+ *
+ */
+
+#include "quadmath-imp.h"
+
+static const __float128 one = 1.0Q, huge = 1e4900Q;
+static const __float128 zero = 0.0Q;
+
+__float128
+atanhq (__float128 x)
+{
+	__float128 t;
+	uint32_t jx, ix;
+	ieee854_float128 u;
+
+	u.value = x;
+	jx = u.words32.w0;
+	ix = jx & 0x7fffffff;
+	u.words32.w0 = ix;
+	if (ix >= 0x3fff0000) /* |x| >= 1.0 or infinity or NaN */
+	  {
+	    if (u.value == one)
+	      return x/zero;
+	    else
+	      return (x-x)/(x-x);
+	  }
+	if(ix<0x3fc60000 && (huge+x)>zero) return x;	/* x < 2^-57 */
+
+	if(ix<0x3ffe0000) {		/* x < 0.5 */
+	    t = u.value+u.value;
+	    t = 0.5*log1pq(t+t*u.value/(one-u.value));
+	} else
+	    t = 0.5*log1pq((u.value+u.value)/(one-u.value));
+	if(jx & 0x80000000) return -t; else return t;
+}