644cb69f80
PR libfortran/19308 PR fortran/20120 PR libfortran/22437 * Makefile.am: Add generated files for large real and integers kinds. Add a rule to create the kinds.inc c99_protos.inc files. Use kinds.inc to preprocess Fortran generated files. * libgfortran.h: Add macro definitions for GFC_INTEGER_16_HUGE, GFC_REAL_10_HUGE and GFC_REAL_16_HUGE. Add types gfc_array_i16, gfc_array_r10, gfc_array_r16, gfc_array_c10, gfc_array_c16, gfc_array_l16. * mk-kinds-h.sh: Define macros HAVE_GFC_LOGICAL_* and HAVE_GFC_COMPLEX_* when these types are available. * intrinsics/ishftc.c (ishftc16): New function for GFC_INTEGER_16. * m4/all.m4, m4/any.m4, m4/count.m4, m4/cshift1.m4, m4/dotprod.m4, m4/dotprodc.m4, m4/dotprodl.m4, m4/eoshift1.m4, m4/eoshift3.m4, m4/exponent.m4, m4/fraction.m4, m4/in_pack.m4, m4/in_unpack.m4, m4/matmul.m4, m4/matmull.m4, m4/maxloc0.m4, m4/maxloc1.m4, m4/maxval.m4, m4/minloc0.m4, m4/minloc1.m4, m4/minval.m4, m4/mtype.m4, m4/nearest.m4, m4/pow.m4, m4/product.m4, m4/reshape.m4, m4/set_exponent.m4, m4/shape.m4, m4/specific.m4, m4/specific2.m4, m4/sum.m4, m4/transpose.m4: Protect generated functions with appropriate "#if defined (HAVE_GFC_type_kind)" preprocessor directives. * Makefile.in: Regenerate. * all files in generated/: Regenerate. * f95-lang.c (DO_DEFINE_MATH_BUILTIN): Add support for long double builtin function. (gfc_init_builtin_functions): Add mfunc_longdouble, mfunc_clongdouble and func_clongdouble_longdouble trees. Build them for round, trunc, cabs, copysign and pow functions. * iresolve.c (gfc_resolve_reshape, gfc_resolve_transpose): Add case for kind 10 and 16. * trans-decl.c: Add trees for cpowl10, cpowl16, ishftc16, exponent10 and exponent16. (gfc_build_intrinsic_function_decls): Build nodes for int16, real10, real16, complex10 and complex16 types. Build all possible combinations for function _gfortran_pow_?n_?n. Build function calls cpowl10, cpowl16, ishftc16, exponent10 and exponent16. * trans-expr.c (gfc_conv_power_op): Add case for integer(16), real(10) and real(16). * trans-intrinsic.c: Add suppport for long double builtin functions in BUILT_IN_FUNCTION, LIBM_FUNCTION and LIBF_FUNCTION macros. (gfc_conv_intrinsic_aint): Add case for integer(16), real(10) and real(16) kinds. (gfc_build_intrinsic_lib_fndecls): Add support for real10_decl and real16_decl in library functions. (gfc_get_intrinsic_lib_fndecl): Add cases for real and complex kinds 10 and 16. (gfc_conv_intrinsic_exponent): Add cases for real(10) and real(16) kinds. (gfc_conv_intrinsic_sign): Likewise. (gfc_conv_intrinsic_ishftc): Add case for integer(16) kind. * trans-types.c (gfc_get_int_type, gfc_get_real_type, gfc_get_complex_type, gfc_get_logical_type): Doesn't error out in the case of kinds not available. * trans.h: Declare trees for cpowl10, cpowl16, ishftc16, exponent10 and exponent16. * gfortran.dg/large_real_kind_2.F90: New test. * gfortran.dg/large_integer_kind_2.f90: New test. From-SVN: r104889
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/* Support routines for the intrinsic power (**) operator.
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Copyright 2004 Free Software Foundation, Inc.
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Contributed by Paul Brook
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with libgfortran; see the file COPYING. If not,
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write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "config.h"
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#include "libgfortran.h"
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/* Use Binary Method to calculate the powi. This is not an optimal but
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a simple and reasonable arithmetic. See section 4.6.3, "Evaluation of
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Powers" of Donald E. Knuth, "Seminumerical Algorithms", Vol. 2, "The Art
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of Computer Programming", 3rd Edition, 1998. */
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#if defined (HAVE_GFC_REAL_16) && defined (HAVE_GFC_INTEGER_8)
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GFC_REAL_16 pow_r16_i8 (GFC_REAL_16 a, GFC_INTEGER_8 b);
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export_proto(pow_r16_i8);
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GFC_REAL_16
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pow_r16_i8 (GFC_REAL_16 a, GFC_INTEGER_8 b)
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{
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GFC_REAL_16 pow, x;
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GFC_INTEGER_8 n, u;
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n = b;
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x = a;
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pow = 1;
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if (n != 0)
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{
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if (n < 0)
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{
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n = -n;
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x = pow / x;
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}
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u = n;
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for (;;)
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{
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if (u & 1)
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pow *= x;
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u >>= 1;
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if (u)
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x *= x;
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else
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break;
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}
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}
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return pow;
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}
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#endif
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