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authorGravatar Alexey Yakovenko <waker@users.sourceforge.net>2014-02-08 12:27:03 +0100
committerGravatar Alexey Yakovenko <waker@users.sourceforge.net>2014-02-08 12:27:03 +0100
commit446f1290eaee36eb97b602360a0967c904aff0b8 (patch)
treede1b13d839c04da9ab543c6900ad78a69087a6b0 /optmath.h
parent64d456ab82afa922bb1e2d6a255b7371b60045f1 (diff)
added / updated / corrected COPYING information in the core, aac, alac, adplug; renamed optmath.h to fastftoi.h
Diffstat (limited to 'optmath.h')
-rw-r--r--optmath.h159
1 files changed, 0 insertions, 159 deletions
diff --git a/optmath.h b/optmath.h
deleted file mode 100644
index 1dcafd48..00000000
--- a/optmath.h
+++ /dev/null
@@ -1,159 +0,0 @@
-// most of the code below was taken from libvorbis/vorbis/lib/os.h
-// under the conditions below
-/********************************************************************
- * *
- * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
- * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
- * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
- * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
- * *
- * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009 *
- * by the Xiph.Org Foundation http://www.xiph.org/ *
- * *
- ********************************************************************
-
-contents of the libvorbis COPYING:
-
-Copyright (c) 2002-2008 Xiph.org Foundation
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-
-- Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-
-- Redistributions in binary form must reproduce the above copyright
-notice, this list of conditions and the following disclaimer in the
-documentation and/or other materials provided with the distribution.
-
-- Neither the name of the Xiph.org Foundation nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION
-OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#ifndef __OPTMATH_H
-#define __OPTMATH_H
-
-#include <math.h>
-
-#ifdef __SSE2__ // that comes from -msse2
-#define __FORCE_SSE2__
-#endif
-
-/* Special i386 GCC implementation */
-#if defined(__i386__) && defined(__GNUC__) && !defined(__BEOS__) && !defined(__FORCE_SSE2__)
-# define FPU_CONTROL
-/* both GCC and MSVC are kinda stupid about rounding/casting to int.
- Because of encapsulation constraints (GCC can't see inside the asm
- block and so we end up doing stupid things like a store/load that
- is collectively a noop), we do it this way */
-
-/* we must set up the fpu before this works!! */
-
-typedef int16_t fpu_control;
-
-static inline void fpu_setround(fpu_control *fpu){
- int16_t ret;
- int16_t temp;
- __asm__ __volatile__("fnstcw %0\n\t"
- "movw %0,%%dx\n\t"
- "orw $62463,%%dx\n\t"
- "movw %%dx,%1\n\t"
- "fldcw %1\n\t":"=m"(ret):"m"(temp): "dx");
- *fpu=ret;
-}
-
-static inline void fpu_restore(fpu_control fpu){
- __asm__ __volatile__("fldcw %0":: "m"(fpu));
-}
-
-/* assumes the FPU is in round mode! */
-static inline int ftoi(double f){ /* yes, double! Otherwise,
- we get extra fst/fld to
- truncate precision */
- int i;
- __asm__("fistl %0": "=m"(i) : "t"(f));
- return(i);
-}
-#endif /* Special i386 GCC implementation */
-
-
-/* MSVC inline assembly. 32 bit only; inline ASM isn't implemented in the
- * 64 bit compiler */
-#if defined(_MSC_VER) && !defined(_WIN64)
-# define FPU_CONTROL
-
-typedef int16_t fpu_control;
-
-static __inline int ftoi(double f){
- int i;
- __asm{
- fld f
- fistp i
- }
- return i;
-}
-
-static __inline void fpu_setround(fpu_control *fpu){
-}
-
-static __inline void fpu_restore(fpu_control fpu){
-}
-
-#endif /* Special MSVC 32 bit implementation */
-
-
-/* Optimized code path for x86_64 builds. Uses SSE2 intrinsics. This can be
- done safely because all x86_64 CPUs supports SSE2. */
-#if (defined(__FORCE_SSE2__)) || (defined(_MSC_VER) && defined(_WIN64)) || (defined(__GNUC__) && defined (__x86_64__))
-#pragma warning "using sse2 for ftoi"
-# define FPU_CONTROL
-
-typedef int16_t fpu_control;
-
-#include <emmintrin.h>
-static __inline int ftoi(double f){
- return _mm_cvtsd_si32(_mm_load_sd(&f));
-}
-
-static __inline void fpu_setround(fpu_control *fpu){
-}
-
-static __inline void fpu_restore(fpu_control fpu){
-}
-
-#endif /* Special MSVC x64 implementation */
-
-
-/* If no special implementation was found for the current compiler / platform,
- use the default implementation here: */
-#ifndef FPU_CONTROL
-
-typedef int fpu_control;
-
-static int ftoi(double f){
- /* Note: MSVC and GCC (at least on some systems) round towards zero, thus,
- the floor() call is required to ensure correct roudning of
- negative numbers */
- return (int)floor(f+.5);
-}
-
-/* We don't have special code for this compiler/arch, so do it the slow way */
-# define fpu_setround(fpu_control) {}
-# define fpu_restore(fpu_control) {}
-
-#endif /* default implementation */
-
-#endif // __OPTMATH_H