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authorMaurus Cuelenaere <mcuelenaere@gmail.com>2009-07-04 13:17:58 +0000
committerMaurus Cuelenaere <mcuelenaere@gmail.com>2009-07-04 13:17:58 +0000
commitc3bc8fda8019c69c1bf9cd74539df07db527eebc (patch)
tree7bab3843bfe24cbdbb5153baba12827bcd755a72 /apps/codecs/lib/fixedpoint.h
parent861b8d8606059de2f7527e9429dc109e8b89c03c (diff)
downloadrockbox-c3bc8fda8019c69c1bf9cd74539df07db527eebc.tar.gz
rockbox-c3bc8fda8019c69c1bf9cd74539df07db527eebc.zip
Revert "Consolidate all fixed point math routines in one library (FS#10400) by Jeffrey Goode"
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21635 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/codecs/lib/fixedpoint.h')
-rw-r--r--apps/codecs/lib/fixedpoint.h126
1 files changed, 0 insertions, 126 deletions
diff --git a/apps/codecs/lib/fixedpoint.h b/apps/codecs/lib/fixedpoint.h
deleted file mode 100644
index 54ece27080..0000000000
--- a/apps/codecs/lib/fixedpoint.h
+++ /dev/null
@@ -1,126 +0,0 @@
-/***************************************************************************
- * __________ __ ___.
- * Open \______ \ ____ ____ | | _\_ |__ _______ ___
- * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
- * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
- * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
- * \/ \/ \/ \/ \/
- * $Id: fixedpoint.h -1 $
- *
- * Copyright (C) 2006 Jens Arnold
- *
- * Fixed point library for plugins
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ****************************************************************************/
-
-#ifndef _FIXEDPOINT_H
-#define _FIXEDPOINT_H
-
-#include <inttypes.h>
-
-/** TAKEN FROM apps/dsp.h */
-/* A bunch of fixed point assembler helper macros */
-#if defined(CPU_COLDFIRE)
-/* These macros use the Coldfire EMAC extension and need the MACSR flags set
- * to fractional mode with no rounding.
- */
-
-/* Multiply two S.31 fractional integers and return the sign bit and the
- * 31 most significant bits of the result.
- */
-#define FRACMUL(x, y) \
-({ \
- long t; \
- asm ("mac.l %[a], %[b], %%acc0\n\t" \
- "movclr.l %%acc0, %[t]\n\t" \
- : [t] "=r" (t) : [a] "r" (x), [b] "r" (y)); \
- t; \
-})
-
-/* Multiply two S.31 fractional integers, and return the 32 most significant
- * bits after a shift left by the constant z. NOTE: Only works for shifts of
- * 1 to 8 on Coldfire!
- */
-#define FRACMUL_SHL(x, y, z) \
-({ \
- long t, t2; \
- asm ("mac.l %[a], %[b], %%acc0\n\t" \
- "moveq.l %[d], %[t]\n\t" \
- "move.l %%accext01, %[t2]\n\t" \
- "and.l %[mask], %[t2]\n\t" \
- "lsr.l %[t], %[t2]\n\t" \
- "movclr.l %%acc0, %[t]\n\t" \
- "asl.l %[c], %[t]\n\t" \
- "or.l %[t2], %[t]\n\t" \
- : [t] "=&d" (t), [t2] "=&d" (t2) \
- : [a] "r" (x), [b] "r" (y), [mask] "d" (0xff), \
- [c] "i" ((z)), [d] "i" (8 - (z))); \
- t; \
-})
-
-#elif defined(CPU_ARM)
-
-/* Multiply two S.31 fractional integers and return the sign bit and the
- * 31 most significant bits of the result.
- */
-#define FRACMUL(x, y) \
-({ \
- long t, t2; \
- asm ("smull %[t], %[t2], %[a], %[b]\n\t" \
- "mov %[t2], %[t2], asl #1\n\t" \
- "orr %[t], %[t2], %[t], lsr #31\n\t" \
- : [t] "=&r" (t), [t2] "=&r" (t2) \
- : [a] "r" (x), [b] "r" (y)); \
- t; \
-})
-
-/* Multiply two S.31 fractional integers, and return the 32 most significant
- * bits after a shift left by the constant z.
- */
-#define FRACMUL_SHL(x, y, z) \
-({ \
- long t, t2; \
- asm ("smull %[t], %[t2], %[a], %[b]\n\t" \
- "mov %[t2], %[t2], asl %[c]\n\t" \
- "orr %[t], %[t2], %[t], lsr %[d]\n\t" \
- : [t] "=&r" (t), [t2] "=&r" (t2) \
- : [a] "r" (x), [b] "r" (y), \
- [c] "M" ((z) + 1), [d] "M" (31 - (z))); \
- t; \
-})
-
-#else
-
-#define FRACMUL(x, y) (long) (((((long long) (x)) * ((long long) (y))) >> 31))
-#define FRACMUL_SHL(x, y, z) \
-((long)(((((long long) (x)) * ((long long) (y))) >> (31 - (z)))))
-
-#endif
-
-#define DIV64(x, y, z) (long)(((long long)(x) << (z))/(y))
-
-
-/** TAKEN FROM ORIGINAL fixedpoint.h */
-/* fast unsigned multiplication (16x16bit->32bit or 32x32bit->32bit,
- * whichever is faster for the architecture) */
-#ifdef CPU_ARM
-#define FMULU(a, b) ((uint32_t) (((uint32_t) (a)) * ((uint32_t) (b))))
-#else /* SH1, coldfire */
-#define FMULU(a, b) ((uint32_t) (((uint16_t) (a)) * ((uint16_t) (b))))
-#endif
-
-long fsincos(unsigned long phase, long *cos);
-long fsqrt(long a, unsigned int fracbits);
-long cos_int(int val);
-long sin_int(int val);
-long flog(int x);
-
-#endif