diff options
Diffstat (limited to 'sysdeps/powerpc/fpu/e_hypot.c')
| -rw-r--r-- | sysdeps/powerpc/fpu/e_hypot.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/sysdeps/powerpc/fpu/e_hypot.c b/sysdeps/powerpc/fpu/e_hypot.c deleted file mode 100644 index 2685ca6ba0..0000000000 --- a/sysdeps/powerpc/fpu/e_hypot.c +++ /dev/null @@ -1,134 +0,0 @@ -/* Pythagorean addition using doubles - Copyright (C) 2011-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library - Contributed by Adhemerval Zanella <azanella@br.ibm.com>, 2011 - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - The GNU C 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see <http://www.gnu.org/licenses/>. */ - -#include <math.h> -#include <math_private.h> -#include <stdint.h> - -static const double two60 = 1.152921504606847e+18; -static const double two500 = 3.2733906078961419e+150; -static const double two600 = 4.149515568880993e+180; -static const double two1022 = 4.49423283715579e+307; -static const double twoM500 = 3.054936363499605e-151; -static const double twoM600 = 2.4099198651028841e-181; -static const double two60factor = 1.5592502418239997e+290; -static const double pdnum = 2.225073858507201e-308; - -/* __ieee754_hypot(x,y) - * - * This a FP only version without any FP->INT conversion. - * It is similar to default C version, making appropriates - * overflow and underflows checks as well scaling when it - * is needed. - */ - -#ifdef _ARCH_PWR7 -/* POWER7 isinf and isnan optimization are fast. */ -# define TEST_INF_NAN(x, y) \ - if ((isinf(x) || isinf(y)) \ - && !issignaling (x) && !issignaling (y)) \ - return INFINITY; \ - if (isnan(x) || isnan(y)) \ - return x + y; -# else -/* For POWER6 and below isinf/isnan triggers LHS and PLT calls are - * costly (especially for POWER6). */ -# define GET_TW0_HIGH_WORD(d1,d2,i1,i2) \ - do { \ - ieee_double_shape_type gh_u1; \ - ieee_double_shape_type gh_u2; \ - gh_u1.value = (d1); \ - gh_u2.value = (d2); \ - (i1) = gh_u1.parts.msw & 0x7fffffff; \ - (i2) = gh_u2.parts.msw & 0x7fffffff; \ - } while (0) - -# define TEST_INF_NAN(x, y) \ - do { \ - uint32_t hx, hy; \ - GET_TW0_HIGH_WORD(x, y, hx, hy); \ - if (hy > hx) { \ - uint32_t ht = hx; hx = hy; hy = ht; \ - } \ - if (hx >= 0x7ff00000) { \ - if ((hx == 0x7ff00000 || hy == 0x7ff00000) \ - && !issignaling (x) && !issignaling (y)) \ - return INFINITY; \ - return x + y; \ - } \ - } while (0) - -#endif - - -double -__ieee754_hypot (double x, double y) -{ - x = fabs (x); - y = fabs (y); - - TEST_INF_NAN (x, y); - - if (y > x) - { - double t = x; - x = y; - y = t; - } - if (y == 0.0) - return x; - /* if y is higher enough, y * 2^60 might overflow. The tests if - y >= 1.7976931348623157e+308/2^60 (two60factor) and uses the - appropriate check to avoid the overflow exception generation. */ - if (y > two60factor) - { - if ((x / y) > two60) - return x + y; - } - else - { - if (x > (y * two60)) - return x + y; - } - if (x > two500) - { - x *= twoM600; - y *= twoM600; - return __ieee754_sqrt (x * x + y * y) / twoM600; - } - if (y < twoM500) - { - if (y <= pdnum) - { - x *= two1022; - y *= two1022; - double ret = __ieee754_sqrt (x * x + y * y) / two1022; - math_check_force_underflow_nonneg (ret); - return ret; - } - else - { - x *= two600; - y *= two600; - return __ieee754_sqrt (x * x + y * y) / two600; - } - } - return __ieee754_sqrt (x * x + y * y); -} -strong_alias (__ieee754_hypot, __hypot_finite) |