diff options
author | Jack Rosenthal <jrosenth@chromium.org> | 2021-11-04 12:11:58 -0600 |
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committer | Commit Bot <commit-bot@chromium.org> | 2021-11-05 04:22:34 +0000 |
commit | 252457d4b21f46889eebad61d4c0a65331919cec (patch) | |
tree | 01856c4d31d710b20e85a74c8d7b5836e35c3b98 /core/nds32/math.c | |
parent | 08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff) | |
download | chrome-ec-stabilize-14526.67.B-ish.tar.gz |
ish: Trim down the release branchstabilize-wristpin-14469.59.B-ishstabilize-voshyr-14637.B-ishstabilize-quickfix-14695.187.B-ishstabilize-quickfix-14695.124.B-ishstabilize-quickfix-14526.91.B-ishstabilize-14695.85.B-ishstabilize-14695.107.B-ishstabilize-14682.B-ishstabilize-14633.B-ishstabilize-14616.B-ishstabilize-14589.B-ishstabilize-14588.98.B-ishstabilize-14588.14.B-ishstabilize-14588.123.B-ishstabilize-14536.B-ishstabilize-14532.B-ishstabilize-14528.B-ishstabilize-14526.89.B-ishstabilize-14526.84.B-ishstabilize-14526.73.B-ishstabilize-14526.67.B-ishstabilize-14526.57.B-ishstabilize-14498.B-ishstabilize-14496.B-ishstabilize-14477.B-ishstabilize-14469.9.B-ishstabilize-14469.8.B-ishstabilize-14469.58.B-ishstabilize-14469.41.B-ishstabilize-14442.B-ishstabilize-14438.B-ishstabilize-14411.B-ishstabilize-14396.B-ishstabilize-14395.B-ishstabilize-14388.62.B-ishstabilize-14388.61.B-ishstabilize-14388.52.B-ishstabilize-14385.B-ishstabilize-14345.B-ishstabilize-14336.B-ishstabilize-14333.B-ishrelease-R99-14469.B-ishrelease-R98-14388.B-ishrelease-R102-14695.B-ishrelease-R101-14588.B-ishrelease-R100-14526.B-ishfirmware-cherry-14454.B-ishfirmware-brya-14505.B-ishfirmware-brya-14505.71.B-ishfactory-kukui-14374.B-ishfactory-guybrush-14600.B-ishfactory-cherry-14455.B-ishfactory-brya-14517.B-ish
In the interest of making long-term branch maintenance incur as little
technical debt on us as possible, we should not maintain any files on
the branch we are not actually using.
This has the added effect of making it extremely clear when merging CLs
from the main branch when changes have the possibility to affect us.
The follow-on CL adds a convenience script to actually pull updates from
the main branch and generate a CL for the update.
BUG=b:204206272
BRANCH=ish
TEST=make BOARD=arcada_ish && make BOARD=drallion_ish
Signed-off-by: Jack Rosenthal <jrosenth@chromium.org>
Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038
Reviewed-by: Jett Rink <jettrink@chromium.org>
Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'core/nds32/math.c')
-rw-r--r-- | core/nds32/math.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/core/nds32/math.c b/core/nds32/math.c deleted file mode 100644 index 496fcc0e5d..0000000000 --- a/core/nds32/math.c +++ /dev/null @@ -1,116 +0,0 @@ -/* Copyright 2017 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "common.h" - -#ifdef CONFIG_FPU -union ieee_float_shape_type { - float value; - uint32_t word; -}; - -/* Get a 32 bit int from a float. */ -#define GET_FLOAT_WORD(i, d) \ - do { \ - union ieee_float_shape_type gf_u; \ - gf_u.value = (d); \ - (i) = gf_u.word; \ - } while (0) - -/* Set a float from a 32 bit int. */ -#define SET_FLOAT_WORD(d, i) \ - do { \ - union ieee_float_shape_type sf_u; \ - sf_u.word = (i); \ - (d) = sf_u.value; \ - } while (0) - -float fabsf(float x) -{ - uint32_t ix; - - GET_FLOAT_WORD(ix, x); - SET_FLOAT_WORD(x, (ix & 0x7fffffff)); - - return x; -} - -#define FLT_UWORD_IS_ZERO(x) ((x) == 0) -#define FLT_UWORD_IS_SUBNORMAL(x) ((x) < 0x00800000L) -#define FLT_UWORD_IS_FINITE(x) ((x) < 0x7f800000L) - -static const float one = 1.0f, tiny = 1.0e-30f; -static float __ieee754_sqrtf(float x) -{ - float z; - uint32_t r, hx; - int32_t ix, s, q, m, t, i; - - GET_FLOAT_WORD(ix, x); - hx = ix & 0x7fffffff; - - /* - * take care of Inf and NaN - * sqrt(NaN)=NaN, sqrt(+inf)=+inf, sqrt(-inf)=sNaN - */ - if (!FLT_UWORD_IS_FINITE(hx)) - return x * x + x; - /* take care of zero and -ves */ - if (FLT_UWORD_IS_ZERO(hx)) - return x; - if (ix < 0) - return (x - x) / (x - x); - - m = (ix >> 23); - if (FLT_UWORD_IS_SUBNORMAL(hx)) { - for (i = 0; (ix & 0x00800000L) == 0; i++) - ix <<= 1; - m -= i - 1; - } - - m -= 127; - ix = (ix & 0x007fffffL) | 0x00800000L; - if (m & 1) - ix += ix; - - m >>= 1; - ix += ix; - q = s = 0; - r = 0x01000000L; - - while (r != 0) { - t = s + r; - if (t <= ix) { - s = t + r; - ix -= t; - q += r; - } - ix += ix; - r >>= 1; - } - - if (ix != 0) { - z = one - tiny; - if (z >= one) { - z = one + tiny; - if (z > one) - q += 2; - else - q += (q & 1); - } - } - - ix = (q >> 1) + 0x3f000000L; - ix += (m << 23); - SET_FLOAT_WORD(z, ix); - - return z; -} - -float sqrtf(float x) -{ - return __ieee754_sqrtf(x); -} -#endif |