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Diffstat (limited to 'Build/source/libs/mpfr/mpfr-src/src/asin.c')
-rw-r--r--Build/source/libs/mpfr/mpfr-src/src/asin.c125
1 files changed, 0 insertions, 125 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/asin.c b/Build/source/libs/mpfr/mpfr-src/src/asin.c
deleted file mode 100644
index 62cf89b862a..00000000000
--- a/Build/source/libs/mpfr/mpfr-src/src/asin.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/* mpfr_asin -- arc-sinus of a floating-point number
-
-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. */
-
-#include "mpfr-impl.h"
-
-int
-mpfr_asin (mpfr_ptr asin, mpfr_srcptr x, mpfr_rnd_t rnd_mode)
-{
- mpfr_t xp;
- int compared, inexact;
- mpfr_prec_t prec;
- mpfr_exp_t xp_exp;
- 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),
- ("asin[%Pu]=%.*Rg inexact=%d", mpfr_get_prec (asin), mpfr_log_prec, asin,
- inexact));
-
- /* Special cases */
- if (MPFR_UNLIKELY (MPFR_IS_SINGULAR (x)))
- {
- if (MPFR_IS_NAN (x) || MPFR_IS_INF (x))
- {
- MPFR_SET_NAN (asin);
- MPFR_RET_NAN;
- }
- else /* x = 0 */
- {
- MPFR_ASSERTD (MPFR_IS_ZERO (x));
- MPFR_SET_ZERO (asin);
- MPFR_SET_SAME_SIGN (asin, x);
- MPFR_RET (0); /* exact result */
- }
- }
-
- /* asin(x) = x + x^3/6 + ... so the error is < 2^(3*EXP(x)-2) */
- MPFR_FAST_COMPUTE_IF_SMALL_INPUT (asin, x, -2 * MPFR_GET_EXP (x), 2, 1,
- rnd_mode, {});
-
- /* Set x_p=|x| (x is a normal number) */
- mpfr_init2 (xp, MPFR_PREC (x));
- inexact = mpfr_abs (xp, x, MPFR_RNDN);
- MPFR_ASSERTD (inexact == 0);
-
- compared = mpfr_cmp_ui (xp, 1);
-
- MPFR_SAVE_EXPO_MARK (expo);
-
- if (MPFR_UNLIKELY (compared >= 0))
- {
- mpfr_clear (xp);
- if (compared > 0) /* asin(x) = NaN for |x| > 1 */
- {
- MPFR_SAVE_EXPO_FREE (expo);
- MPFR_SET_NAN (asin);
- MPFR_RET_NAN;
- }
- else /* x = 1 or x = -1 */
- {
- if (MPFR_IS_POS (x)) /* asin(+1) = Pi/2 */
- inexact = mpfr_const_pi (asin, rnd_mode);
- else /* asin(-1) = -Pi/2 */
- {
- inexact = -mpfr_const_pi (asin, MPFR_INVERT_RND(rnd_mode));
- MPFR_CHANGE_SIGN (asin);
- }
- mpfr_div_2ui (asin, asin, 1, rnd_mode);
- }
- }
- else
- {
- /* Compute exponent of 1 - ABS(x) */
- mpfr_ui_sub (xp, 1, xp, MPFR_RNDD);
- MPFR_ASSERTD (MPFR_GET_EXP (xp) <= 0);
- MPFR_ASSERTD (MPFR_GET_EXP (x) <= 0);
- xp_exp = 2 - MPFR_GET_EXP (xp);
-
- /* Set up initial prec */
- prec = MPFR_PREC (asin) + 10 + xp_exp;
-
- /* use asin(x) = atan(x/sqrt(1-x^2)) */
- MPFR_ZIV_INIT (loop, prec);
- for (;;)
- {
- mpfr_set_prec (xp, prec);
- mpfr_sqr (xp, x, MPFR_RNDN);
- mpfr_ui_sub (xp, 1, xp, MPFR_RNDN);
- mpfr_sqrt (xp, xp, MPFR_RNDN);
- mpfr_div (xp, x, xp, MPFR_RNDN);
- mpfr_atan (xp, xp, MPFR_RNDN);
- if (MPFR_LIKELY (MPFR_CAN_ROUND (xp, prec - xp_exp,
- MPFR_PREC (asin), rnd_mode)))
- break;
- MPFR_ZIV_NEXT (loop, prec);
- }
- MPFR_ZIV_FREE (loop);
- inexact = mpfr_set (asin, xp, rnd_mode);
-
- mpfr_clear (xp);
- }
-
- MPFR_SAVE_EXPO_FREE (expo);
- return mpfr_check_range (asin, inexact, rnd_mode);
-}