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Diffstat (limited to 'Build/source/libs/mpfr/mpfr-src/src/asinh.c')
-rw-r--r-- | Build/source/libs/mpfr/mpfr-src/src/asinh.c | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/asinh.c b/Build/source/libs/mpfr/mpfr-src/src/asinh.c deleted file mode 100644 index 10aa23fc77e..00000000000 --- a/Build/source/libs/mpfr/mpfr-src/src/asinh.c +++ /dev/null @@ -1,119 +0,0 @@ -/* mpfr_asinh -- inverse hyperbolic sine - -Copyright 2001-2020 Free Software Foundation, Inc. -Contributed by the AriC and Caramba projects, INRIA. - -This file is part of the GNU MPFR Library. - -The GNU MPFR Library is free software; you can redistribute it and/or modify -it under the terms of the GNU Lesser General Public License as published by -the Free Software Foundation; either version 3 of the License, or (at your -option) any later version. - -The GNU MPFR Library is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public -License for more details. - -You should have received a copy of the GNU Lesser General Public License -along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see -https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., -51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ - -#define MPFR_NEED_LONGLONG_H -#include "mpfr-impl.h" - -/* The computation of asinh is done by * - * asinh = ln(x + sqrt(x^2 + 1)) */ - -int -mpfr_asinh (mpfr_ptr y, mpfr_srcptr x, mpfr_rnd_t rnd_mode) -{ - int inexact; - int signx, neg; - mpfr_prec_t Ny, Nt; - mpfr_t t; /* auxiliary variables */ - mpfr_exp_t err; - MPFR_SAVE_EXPO_DECL (expo); - MPFR_ZIV_DECL (loop); - - MPFR_LOG_FUNC ( - ("x[%Pu]=%.*Rg rnd=%d", mpfr_get_prec (x), mpfr_log_prec, x, rnd_mode), - ("y[%Pu]=%.*Rg inexact=%d", mpfr_get_prec (y), mpfr_log_prec, y, - inexact)); - - if (MPFR_UNLIKELY (MPFR_IS_SINGULAR (x))) - { - if (MPFR_IS_NAN (x)) - { - MPFR_SET_NAN (y); - MPFR_RET_NAN; - } - else if (MPFR_IS_INF (x)) - { - MPFR_SET_INF (y); - MPFR_SET_SAME_SIGN (y, x); - MPFR_RET (0); - } - else /* x is necessarily 0 */ - { - MPFR_ASSERTD (MPFR_IS_ZERO (x)); - MPFR_SET_ZERO (y); /* asinh(0) = 0 */ - MPFR_SET_SAME_SIGN (y, x); - MPFR_RET (0); - } - } - - /* asinh(x) = x - x^3/6 + ... so the error is < 2^(3*EXP(x)-2) */ - MPFR_FAST_COMPUTE_IF_SMALL_INPUT (y, x, -2 * MPFR_GET_EXP (x), 2, 0, - rnd_mode, {}); - - Ny = MPFR_PREC (y); /* Precision of output variable */ - - signx = MPFR_SIGN (x); - neg = MPFR_IS_NEG (x); - - /* General case */ - - /* compute the precision of intermediary variable */ - /* the optimal number of bits : see algorithms.tex */ - Nt = Ny + 4 + MPFR_INT_CEIL_LOG2 (Ny); - - MPFR_SAVE_EXPO_MARK (expo); - - /* initialize intermediary variables */ - mpfr_init2 (t, Nt); - - /* First computation of asinh */ - MPFR_ZIV_INIT (loop, Nt); - for (;;) - { - /* compute asinh */ - mpfr_sqr (t, x, MPFR_RNDD); /* x^2 */ - mpfr_add_ui (t, t, 1, MPFR_RNDD); /* x^2+1 */ - mpfr_sqrt (t, t, MPFR_RNDN); /* sqrt(x^2+1) */ - (neg ? mpfr_sub : mpfr_add) (t, t, x, MPFR_RNDN); /* sqrt(x^2+1)+x */ - mpfr_log (t, t, MPFR_RNDN); /* ln(sqrt(x^2+1)+x)*/ - - if (MPFR_LIKELY (MPFR_IS_PURE_FP (t))) - { - /* error estimate -- see algorithms.tex */ - err = Nt - (MAX (4 - MPFR_GET_EXP (t), 0) + 1); - if (MPFR_LIKELY (MPFR_IS_ZERO (t) - || MPFR_CAN_ROUND (t, err, Ny, rnd_mode))) - break; - } - - /* actualization of the precision */ - MPFR_ZIV_NEXT (loop, Nt); - mpfr_set_prec (t, Nt); - } - MPFR_ZIV_FREE (loop); - - inexact = mpfr_set4 (y, t, rnd_mode, signx); - - mpfr_clear (t); - - MPFR_SAVE_EXPO_FREE (expo); - return mpfr_check_range (y, inexact, rnd_mode); -} |