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// Copyright (c) 1999-2013 Regents of the University of California
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// FFTW: Copyright (c) 2003,2006 Matteo Frigo
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// Copyright (c) 2003,2006 Massachusets Institute of Technology
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// fft8g.[cpp,h]: Copyright (c) 1995-2001 Takya Ooura
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// ASMLIB: Copyright (c) 2004 Agner Fog
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// This program is free software; you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option) any later
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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// You should have received a copy of the GNU General Public License along
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// with this program; see the file COPYING. If not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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// In addition, as a special exception, the Regents of the University of
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// California give permission to link the code of this program with libraries
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// that provide specific optimized fast Fourier transform (FFT) functions
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// as an alternative to FFTW and distribute a linked executable and
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// source code. You must obey the GNU General Public License in all
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// respects for all of the code used other than the FFT library itself.
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// Any modification required to support these libraries must be distributed
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// under the terms of this license. If you modify this program, you may extend
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// this exception to your version of the program, but you are not obligated to
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// do so. If you do not wish to do so, delete this exception statement from
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// your version. Please be aware that FFTW and ASMLIB are not covered by
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// this exception, therefore you may not use FFTW and ASMLIB in any derivative
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// work so modified without permission of the authors of those packages.
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#if defined(__arm__) && !defined(_RC_CHOP)
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#include "sighandler.h"
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#define _EM_INVALID 0x00000100 // Invalid Operation
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#define _EM_ZERODIVIDE 0x00000200 // Divide by zero
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#define _EM_OVERFLOW 0x00000400 // Overflow
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#define _EM_UNDERFLOW 0x00000800 // Underflow
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#define _EM_INEXACT 0x00001000 // Inexact result
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#define _EM_DENORMAL 0x00008000 // Denormal result
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#define _MCW_EM (_EM_INVALID|_EM_ZERODIVIDE|_EM_OVERFLOW|_EM_UNDERFLOW|_EM_INEXACT|_EM_DENORMAL)
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#define _RC_CHOP 0x000c0000 // Truncate
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#define _RC_DOWN 0x00080000 // Round down
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#define _RC_UP 0x00040000 // Round up
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#define _RC_NEAREST 0x00000000 // Round to nearest
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#define _MCW_RC (_RC_CHOP|_RC_UP|_RC_DOWN|_RC_NEAREST)
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#define _NAN_DEFAULT 0x00200000 // Use default NaN rather than propogating NaN
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#define _MCW_NAN _NAN_DEFAULT
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#define _FLUSH_TO_ZERO 0x00100000 // Replaces denormalized numbers with zero
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#define _MCW_FLUSH_TO_ZERO _FLUSH_TO_ZERO
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These VFP vector mode has been deprecated
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#define _VECTOR_LEN(x) ((((x)-1)&7)<<16) // Set length of vectors to x
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#define _MCW_VECTOR_LEN_MASK _VECTOR_LEN(8)
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#define _VECTOR_STRIDE(x) (((x)==2)?(3<<20):0)
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#define _MCW_VECTOR_STRIDE_MASK (3<<20)
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static unsigned int save_cw;
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static unsigned int cw;
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inline static unsigned int controlfp(unsigned int flags, unsigned int mask) {
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if (sigsetjmp(jb,1)) {
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uninstall_sighandler();
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fprintf(stderr,"User mode control of fp control register not allowed\n");
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#if defined(__VFP_FP__) && !defined(__SOFTFP__)
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__asm__ __volatile__ (
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cw=(cw & ~mask) | (flags & mask);
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#if defined(__VFP_FP__) && !defined(__SOFTFP__)
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__asm__ __volatile__ (
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uninstall_sighandler();
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inline static unsigned int restorefp() {
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#if defined(__VFP_FP__) && !defined(__SOFTFP__)
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__asm__ __volatile__ (
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static const uint64_t arm_TWO_TO_52(0x4330000000000000);
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static const uint64_t arm_SIGN_BIT(0x8000000000000000);
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static const uint32_t arm_TWO_TO_23(0x4b000000);
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static const uint32_t arm_FSIGN_BIT(0x80000000);
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inline static double arm_round(double x) {
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register uint64_t s=*reinterpret_cast<uint64_t *>(&x) & arm_SIGN_BIT;
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uint64_t a=s | arm_TWO_TO_52;
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register double d=*reinterpret_cast<double *>(&a);
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inline static float arm_round(float x) {
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register uint32_t s=*reinterpret_cast<uint32_t *>(&x) & arm_FSIGN_BIT;
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uint32_t a=s | arm_TWO_TO_23;
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register float d=*reinterpret_cast<float *>(&a);
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#define round(x) arm_round(x)
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inline static double arm_floor(double x) {
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inline static float arm_floor(float x) {
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return round(x-0.5f);
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#define floor(x) arm_floor(x)
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.pc/fix-ftbfs-arm64.patch/client/vector/fp_arm.h
