mirror of
https://github.com/UberGames/lilium-voyager.git
synced 2024-12-15 06:30:49 +00:00
500 lines
13 KiB
C
500 lines
13 KiB
C
|
/*
|
||
|
|
* libmad - MPEG audio decoder library
|
||
|
|
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
|
||
|
|
*
|
||
|
|
* 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 program 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 General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
*
|
||
|
|
* $Id: fixed.h,v 1.38 2004/02/17 02:02:03 rob Exp $
|
||
|
|
*/
|
||
|
|
|
||
|
|
# ifndef LIBMAD_FIXED_H
|
||
|
|
# define LIBMAD_FIXED_H
|
||
|
|
|
||
|
|
# if SIZEOF_INT >= 4
|
||
|
|
typedef signed int mad_fixed_t;
|
||
|
|
|
||
|
|
typedef signed int mad_fixed64hi_t;
|
||
|
|
typedef unsigned int mad_fixed64lo_t;
|
||
|
|
# else
|
||
|
|
typedef signed long mad_fixed_t;
|
||
|
|
|
||
|
|
typedef signed long mad_fixed64hi_t;
|
||
|
|
typedef unsigned long mad_fixed64lo_t;
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if defined(_MSC_VER)
|
||
|
|
# define mad_fixed64_t signed __int64
|
||
|
|
# elif 1 || defined(__GNUC__)
|
||
|
|
# define mad_fixed64_t signed long long
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if defined(FPM_FLOAT)
|
||
|
|
typedef double mad_sample_t;
|
||
|
|
# else
|
||
|
|
typedef mad_fixed_t mad_sample_t;
|
||
|
|
# endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Fixed-point format: 0xABBBBBBB
|
||
|
|
* A == whole part (sign + 3 bits)
|
||
|
|
* B == fractional part (28 bits)
|
||
|
|
*
|
||
|
|
* Values are signed two's complement, so the effective range is:
|
||
|
|
* 0x80000000 to 0x7fffffff
|
||
|
|
* -8.0 to +7.9999999962747097015380859375
|
||
|
|
*
|
||
|
|
* The smallest representable value is:
|
||
|
|
* 0x00000001 == 0.0000000037252902984619140625 (i.e. about 3.725e-9)
|
||
|
|
*
|
||
|
|
* 28 bits of fractional accuracy represent about
|
||
|
|
* 8.6 digits of decimal accuracy.
|
||
|
|
*
|
||
|
|
* Fixed-point numbers can be added or subtracted as normal
|
||
|
|
* integers, but multiplication requires shifting the 64-bit result
|
||
|
|
* from 56 fractional bits back to 28 (and rounding.)
|
||
|
|
*
|
||
|
|
* Changing the definition of MAD_F_FRACBITS is only partially
|
||
|
|
* supported, and must be done with care.
|
||
|
|
*/
|
||
|
|
|
||
|
|
# define MAD_F_FRACBITS 28
|
||
|
|
|
||
|
|
# if MAD_F_FRACBITS == 28
|
||
|
|
# define MAD_F(x) ((mad_fixed_t) (x##L))
|
||
|
|
# else
|
||
|
|
# if MAD_F_FRACBITS < 28
|
||
|
|
# warning "MAD_F_FRACBITS < 28"
|
||
|
|
# define MAD_F(x) ((mad_fixed_t) \
|
||
|
|
(((x##L) + \
|
||
|
|
(1L << (28 - MAD_F_FRACBITS - 1))) >> \
|
||
|
|
(28 - MAD_F_FRACBITS)))
|
||
|
|
# elif MAD_F_FRACBITS > 28
|
||
|
|
# error "MAD_F_FRACBITS > 28 not currently supported"
|
||
|
|
# define MAD_F(x) ((mad_fixed_t) \
|
||
|
|
((x##L) << (MAD_F_FRACBITS - 28)))
|
||
|
|
# endif
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# define MAD_F_MIN ((mad_fixed_t) -0x80000000L)
|
||
|
|
# define MAD_F_MAX ((mad_fixed_t) +0x7fffffffL)
|
||
|
|
|
||
|
|
# define MAD_F_ONE MAD_F(0x10000000)
|
||
|
|
|
||
|
|
# define mad_f_tofixed(x) ((mad_fixed_t) \
|
||
|
|
((x) * (double) (1L << MAD_F_FRACBITS) + 0.5))
|
||
|
|
# define mad_f_todouble(x) ((double) \
|
||
|
|
((x) / (double) (1L << MAD_F_FRACBITS)))
|
||
|
|
|
||
|
|
# define mad_f_intpart(x) ((x) >> MAD_F_FRACBITS)
|
||
|
|
# define mad_f_fracpart(x) ((x) & ((1L << MAD_F_FRACBITS) - 1))
|
||
|
|
/* (x should be positive) */
|
||
|
|
|
||
|
|
# define mad_f_fromint(x) ((x) << MAD_F_FRACBITS)
|
||
|
|
|
||
|
|
# define mad_f_add(x, y) ((x) + (y))
|
||
|
|
# define mad_f_sub(x, y) ((x) - (y))
|
||
|
|
|
||
|
|
# if defined(FPM_FLOAT)
|
||
|
|
# error "FPM_FLOAT not yet supported"
|
||
|
|
|
||
|
|
# undef MAD_F
|
||
|
|
# define MAD_F(x) mad_f_todouble(x)
|
||
|
|
|
||
|
|
# define mad_f_mul(x, y) ((x) * (y))
|
||
|
|
# define mad_f_scale64
|
||
|
|
|
||
|
|
# undef ASO_ZEROCHECK
|
||
|
|
|
||
|
|
# elif defined(FPM_64BIT)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This version should be the most accurate if 64-bit types are supported by
|
||
|
|
* the compiler, although it may not be the most efficient.
|
||
|
|
*/
|
||
|
|
# if defined(OPT_ACCURACY)
|
||
|
|
# define mad_f_mul(x, y) \
|
||
|
|
((mad_fixed_t) \
|
||
|
|
((((mad_fixed64_t) (x) * (y)) + \
|
||
|
|
(1L << (MAD_F_SCALEBITS - 1))) >> MAD_F_SCALEBITS))
|
||
|
|
# else
|
||
|
|
# define mad_f_mul(x, y) \
|
||
|
|
((mad_fixed_t) (((mad_fixed64_t) (x) * (y)) >> MAD_F_SCALEBITS))
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# define MAD_F_SCALEBITS MAD_F_FRACBITS
|
||
|
|
|
||
|
|
/* --- Intel --------------------------------------------------------------- */
|
||
|
|
|
||
|
|
# elif defined(FPM_INTEL)
|
||
|
|
|
||
|
|
# if defined(_MSC_VER)
|
||
|
|
# pragma warning(push)
|
||
|
|
# pragma warning(disable: 4035) /* no return value */
|
||
|
|
static __forceinline
|
||
|
|
mad_fixed_t mad_f_mul_inline(mad_fixed_t x, mad_fixed_t y)
|
||
|
|
{
|
||
|
|
enum {
|
||
|
|
fracbits = MAD_F_FRACBITS
|
||
|
|
};
|
||
|
|
|
||
|
|
__asm {
|
||
|
|
mov eax, x
|
||
|
|
imul y
|
||
|
|
shrd eax, edx, fracbits
|
||
|
|
}
|
||
|
|
|
||
|
|
/* implicit return of eax */
|
||
|
|
}
|
||
|
|
# pragma warning(pop)
|
||
|
|
|
||
|
|
# define mad_f_mul mad_f_mul_inline
|
||
|
|
# define mad_f_scale64
|
||
|
|
# else
|
||
|
|
/*
|
||
|
|
* This Intel version is fast and accurate; the disposition of the least
|
||
|
|
* significant bit depends on OPT_ACCURACY via mad_f_scale64().
|
||
|
|
*/
|
||
|
|
# define MAD_F_MLX(hi, lo, x, y) \
|
||
|
|
asm ("imull %3" \
|
||
|
|
: "=a" (lo), "=d" (hi) \
|
||
|
|
: "%a" (x), "rm" (y) \
|
||
|
|
: "cc")
|
||
|
|
|
||
|
|
# if defined(OPT_ACCURACY)
|
||
|
|
/*
|
||
|
|
* This gives best accuracy but is not very fast.
|
||
|
|
*/
|
||
|
|
# define MAD_F_MLA(hi, lo, x, y) \
|
||
|
|
({ mad_fixed64hi_t __hi; \
|
||
|
|
mad_fixed64lo_t __lo; \
|
||
|
|
MAD_F_MLX(__hi, __lo, (x), (y)); \
|
||
|
|
asm ("addl %2,%0\n\t" \
|
||
|
|
"adcl %3,%1" \
|
||
|
|
: "=rm" (lo), "=rm" (hi) \
|
||
|
|
: "r" (__lo), "r" (__hi), "0" (lo), "1" (hi) \
|
||
|
|
: "cc"); \
|
||
|
|
})
|
||
|
|
# endif /* OPT_ACCURACY */
|
||
|
|
|
||
|
|
# if defined(OPT_ACCURACY)
|
||
|
|
/*
|
||
|
|
* Surprisingly, this is faster than SHRD followed by ADC.
|
||
|
|
*/
|
||
|
|
# define mad_f_scale64(hi, lo) \
|
||
|
|
({ mad_fixed64hi_t __hi_; \
|
||
|
|
mad_fixed64lo_t __lo_; \
|
||
|
|
mad_fixed_t __result; \
|
||
|
|
asm ("addl %4,%2\n\t" \
|
||
|
|
"adcl %5,%3" \
|
||
|
|
: "=rm" (__lo_), "=rm" (__hi_) \
|
||
|
|
: "0" (lo), "1" (hi), \
|
||
|
|
"ir" (1L << (MAD_F_SCALEBITS - 1)), "ir" (0) \
|
||
|
|
: "cc"); \
|
||
|
|
asm ("shrdl %3,%2,%1" \
|
||
|
|
: "=rm" (__result) \
|
||
|
|
: "0" (__lo_), "r" (__hi_), "I" (MAD_F_SCALEBITS) \
|
||
|
|
: "cc"); \
|
||
|
|
__result; \
|
||
|
|
})
|
||
|
|
# elif defined(OPT_INTEL)
|
||
|
|
/*
|
||
|
|
* Alternate Intel scaling that may or may not perform better.
|
||
|
|
*/
|
||
|
|
# define mad_f_scale64(hi, lo) \
|
||
|
|
({ mad_fixed_t __result; \
|
||
|
|
asm ("shrl %3,%1\n\t" \
|
||
|
|
"shll %4,%2\n\t" \
|
||
|
|
"orl %2,%1" \
|
||
|
|
: "=rm" (__result) \
|
||
|
|
: "0" (lo), "r" (hi), \
|
||
|
|
"I" (MAD_F_SCALEBITS), "I" (32 - MAD_F_SCALEBITS) \
|
||
|
|
: "cc"); \
|
||
|
|
__result; \
|
||
|
|
})
|
||
|
|
# else
|
||
|
|
# define mad_f_scale64(hi, lo) \
|
||
|
|
({ mad_fixed_t __result; \
|
||
|
|
asm ("shrdl %3,%2,%1" \
|
||
|
|
: "=rm" (__result) \
|
||
|
|
: "0" (lo), "r" (hi), "I" (MAD_F_SCALEBITS) \
|
||
|
|
: "cc"); \
|
||
|
|
__result; \
|
||
|
|
})
|
||
|
|
# endif /* OPT_ACCURACY */
|
||
|
|
|
||
|
|
# define MAD_F_SCALEBITS MAD_F_FRACBITS
|
||
|
|
# endif
|
||
|
|
|
||
|
|
/* --- ARM ----------------------------------------------------------------- */
|
||
|
|
|
||
|
|
# elif defined(FPM_ARM)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This ARM V4 version is as accurate as FPM_64BIT but much faster. The
|
||
|
|
* least significant bit is properly rounded at no CPU cycle cost!
|
||
|
|
*/
|
||
|
|
# if 1
|
||
|
|
/*
|
||
|
|
* This is faster than the default implementation via MAD_F_MLX() and
|
||
|
|
* mad_f_scale64().
|
||
|
|
*/
|
||
|
|
# define mad_f_mul(x, y) \
|
||
|
|
({ mad_fixed64hi_t __hi; \
|
||
|
|
mad_fixed64lo_t __lo; \
|
||
|
|
mad_fixed_t __result; \
|
||
|
|
asm ("smull %0, %1, %3, %4\n\t" \
|
||
|
|
"movs %0, %0, lsr %5\n\t" \
|
||
|
|
"adc %2, %0, %1, lsl %6" \
|
||
|
|
: "=&r" (__lo), "=&r" (__hi), "=r" (__result) \
|
||
|
|
: "%r" (x), "r" (y), \
|
||
|
|
"M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS) \
|
||
|
|
: "cc"); \
|
||
|
|
__result; \
|
||
|
|
})
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# define MAD_F_MLX(hi, lo, x, y) \
|
||
|
|
asm ("smull %0, %1, %2, %3" \
|
||
|
|
: "=&r" (lo), "=&r" (hi) \
|
||
|
|
: "%r" (x), "r" (y))
|
||
|
|
|
||
|
|
# define MAD_F_MLA(hi, lo, x, y) \
|
||
|
|
asm ("smlal %0, %1, %2, %3" \
|
||
|
|
: "+r" (lo), "+r" (hi) \
|
||
|
|
: "%r" (x), "r" (y))
|
||
|
|
|
||
|
|
# define MAD_F_MLN(hi, lo) \
|
||
|
|
asm ("rsbs %0, %2, #0\n\t" \
|
||
|
|
"rsc %1, %3, #0" \
|
||
|
|
: "=r" (lo), "=r" (hi) \
|
||
|
|
: "0" (lo), "1" (hi) \
|
||
|
|
: "cc")
|
||
|
|
|
||
|
|
# define mad_f_scale64(hi, lo) \
|
||
|
|
({ mad_fixed_t __result; \
|
||
|
|
asm ("movs %0, %1, lsr %3\n\t" \
|
||
|
|
"adc %0, %0, %2, lsl %4" \
|
||
|
|
: "=&r" (__result) \
|
||
|
|
: "r" (lo), "r" (hi), \
|
||
|
|
"M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS) \
|
||
|
|
: "cc"); \
|
||
|
|
__result; \
|
||
|
|
})
|
||
|
|
|
||
|
|
# define MAD_F_SCALEBITS MAD_F_FRACBITS
|
||
|
|
|
||
|
|
/* --- MIPS ---------------------------------------------------------------- */
|
||
|
|
|
||
|
|
# elif defined(FPM_MIPS)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This MIPS version is fast and accurate; the disposition of the least
|
||
|
|
* significant bit depends on OPT_ACCURACY via mad_f_scale64().
|
||
|
|
*/
|
||
|
|
# define MAD_F_MLX(hi, lo, x, y) \
|
||
|
|
asm ("mult %2,%3" \
|
||
|
|
: "=l" (lo), "=h" (hi) \
|
||
|
|
: "%r" (x), "r" (y))
|
||
|
|
|
||
|
|
# if defined(HAVE_MADD_ASM)
|
||
|
|
# define MAD_F_MLA(hi, lo, x, y) \
|
||
|
|
asm ("madd %2,%3" \
|
||
|
|
: "+l" (lo), "+h" (hi) \
|
||
|
|
: "%r" (x), "r" (y))
|
||
|
|
# elif defined(HAVE_MADD16_ASM)
|
||
|
|
/*
|
||
|
|
* This loses significant accuracy due to the 16-bit integer limit in the
|
||
|
|
* multiply/accumulate instruction.
|
||
|
|
*/
|
||
|
|
# define MAD_F_ML0(hi, lo, x, y) \
|
||
|
|
asm ("mult %2,%3" \
|
||
|
|
: "=l" (lo), "=h" (hi) \
|
||
|
|
: "%r" ((x) >> 12), "r" ((y) >> 16))
|
||
|
|
# define MAD_F_MLA(hi, lo, x, y) \
|
||
|
|
asm ("madd16 %2,%3" \
|
||
|
|
: "+l" (lo), "+h" (hi) \
|
||
|
|
: "%r" ((x) >> 12), "r" ((y) >> 16))
|
||
|
|
# define MAD_F_MLZ(hi, lo) ((mad_fixed_t) (lo))
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if defined(OPT_SPEED)
|
||
|
|
# define mad_f_scale64(hi, lo) \
|
||
|
|
((mad_fixed_t) ((hi) << (32 - MAD_F_SCALEBITS)))
|
||
|
|
# define MAD_F_SCALEBITS MAD_F_FRACBITS
|
||
|
|
# endif
|
||
|
|
|
||
|
|
/* --- SPARC --------------------------------------------------------------- */
|
||
|
|
|
||
|
|
# elif defined(FPM_SPARC)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This SPARC V8 version is fast and accurate; the disposition of the least
|
||
|
|
* significant bit depends on OPT_ACCURACY via mad_f_scale64().
|
||
|
|
*/
|
||
|
|
# define MAD_F_MLX(hi, lo, x, y) \
|
||
|
|
asm ("smul %2, %3, %0\n\t" \
|
||
|
|
"rd %%y, %1" \
|
||
|
|
: "=r" (lo), "=r" (hi) \
|
||
|
|
: "%r" (x), "rI" (y))
|
||
|
|
|
||
|
|
/* --- PowerPC ------------------------------------------------------------- */
|
||
|
|
|
||
|
|
# elif defined(FPM_PPC)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This PowerPC version is fast and accurate; the disposition of the least
|
||
|
|
* significant bit depends on OPT_ACCURACY via mad_f_scale64().
|
||
|
|
*/
|
||
|
|
# define MAD_F_MLX(hi, lo, x, y) \
|
||
|
|
do { \
|
||
|
|
asm ("mullw %0,%1,%2" \
|
||
|
|
: "=r" (lo) \
|
||
|
|
: "%r" (x), "r" (y)); \
|
||
|
|
asm ("mulhw %0,%1,%2" \
|
||
|
|
: "=r" (hi) \
|
||
|
|
: "%r" (x), "r" (y)); \
|
||
|
|
} \
|
||
|
|
while (0)
|
||
|
|
|
||
|
|
# if defined(OPT_ACCURACY)
|
||
|
|
/*
|
||
|
|
* This gives best accuracy but is not very fast.
|
||
|
|
*/
|
||
|
|
# define MAD_F_MLA(hi, lo, x, y) \
|
||
|
|
({ mad_fixed64hi_t __hi; \
|
||
|
|
mad_fixed64lo_t __lo; \
|
||
|
|
MAD_F_MLX(__hi, __lo, (x), (y)); \
|
||
|
|
asm ("addc %0,%2,%3\n\t" \
|
||
|
|
"adde %1,%4,%5" \
|
||
|
|
: "=r" (lo), "=r" (hi) \
|
||
|
|
: "%r" (lo), "r" (__lo), \
|
||
|
|
"%r" (hi), "r" (__hi) \
|
||
|
|
: "xer"); \
|
||
|
|
})
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if defined(OPT_ACCURACY)
|
||
|
|
/*
|
||
|
|
* This is slower than the truncating version below it.
|
||
|
|
*/
|
||
|
|
# define mad_f_scale64(hi, lo) \
|
||
|
|
({ mad_fixed_t __result, __round; \
|
||
|
|
asm ("rotrwi %0,%1,%2" \
|
||
|
|
: "=r" (__result) \
|
||
|
|
: "r" (lo), "i" (MAD_F_SCALEBITS)); \
|
||
|
|
asm ("extrwi %0,%1,1,0" \
|
||
|
|
: "=r" (__round) \
|
||
|
|
: "r" (__result)); \
|
||
|
|
asm ("insrwi %0,%1,%2,0" \
|
||
|
|
: "+r" (__result) \
|
||
|
|
: "r" (hi), "i" (MAD_F_SCALEBITS)); \
|
||
|
|
asm ("add %0,%1,%2" \
|
||
|
|
: "=r" (__result) \
|
||
|
|
: "%r" (__result), "r" (__round)); \
|
||
|
|
__result; \
|
||
|
|
})
|
||
|
|
# else
|
||
|
|
# define mad_f_scale64(hi, lo) \
|
||
|
|
({ mad_fixed_t __result; \
|
||
|
|
asm ("rotrwi %0,%1,%2" \
|
||
|
|
: "=r" (__result) \
|
||
|
|
: "r" (lo), "i" (MAD_F_SCALEBITS)); \
|
||
|
|
asm ("insrwi %0,%1,%2,0" \
|
||
|
|
: "+r" (__result) \
|
||
|
|
: "r" (hi), "i" (MAD_F_SCALEBITS)); \
|
||
|
|
__result; \
|
||
|
|
})
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# define MAD_F_SCALEBITS MAD_F_FRACBITS
|
||
|
|
|
||
|
|
/* --- Default ------------------------------------------------------------- */
|
||
|
|
|
||
|
|
# elif defined(FPM_DEFAULT)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This version is the most portable but it loses significant accuracy.
|
||
|
|
* Furthermore, accuracy is biased against the second argument, so care
|
||
|
|
* should be taken when ordering operands.
|
||
|
|
*
|
||
|
|
* The scale factors are constant as this is not used with SSO.
|
||
|
|
*
|
||
|
|
* Pre-rounding is required to stay within the limits of compliance.
|
||
|
|
*/
|
||
|
|
# if defined(OPT_SPEED)
|
||
|
|
# define mad_f_mul(x, y) (((x) >> 12) * ((y) >> 16))
|
||
|
|
# else
|
||
|
|
# define mad_f_mul(x, y) ((((x) + (1L << 11)) >> 12) * \
|
||
|
|
(((y) + (1L << 15)) >> 16))
|
||
|
|
# endif
|
||
|
|
|
||
|
|
/* ------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
# else
|
||
|
|
# error "no FPM selected"
|
||
|
|
# endif
|
||
|
|
|
||
|
|
/* default implementations */
|
||
|
|
|
||
|
|
# if !defined(mad_f_mul)
|
||
|
|
# define mad_f_mul(x, y) \
|
||
|
|
({ register mad_fixed64hi_t __hi; \
|
||
|
|
register mad_fixed64lo_t __lo; \
|
||
|
|
MAD_F_MLX(__hi, __lo, (x), (y)); \
|
||
|
|
mad_f_scale64(__hi, __lo); \
|
||
|
|
})
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if !defined(MAD_F_MLA)
|
||
|
|
# define MAD_F_ML0(hi, lo, x, y) ((lo) = mad_f_mul((x), (y)))
|
||
|
|
# define MAD_F_MLA(hi, lo, x, y) ((lo) += mad_f_mul((x), (y)))
|
||
|
|
# define MAD_F_MLN(hi, lo) ((lo) = -(lo))
|
||
|
|
# define MAD_F_MLZ(hi, lo) ((void) (hi), (mad_fixed_t) (lo))
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if !defined(MAD_F_ML0)
|
||
|
|
# define MAD_F_ML0(hi, lo, x, y) MAD_F_MLX((hi), (lo), (x), (y))
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if !defined(MAD_F_MLN)
|
||
|
|
# define MAD_F_MLN(hi, lo) ((hi) = ((lo) = -(lo)) ? ~(hi) : -(hi))
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if !defined(MAD_F_MLZ)
|
||
|
|
# define MAD_F_MLZ(hi, lo) mad_f_scale64((hi), (lo))
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if !defined(mad_f_scale64)
|
||
|
|
# if defined(OPT_ACCURACY)
|
||
|
|
# define mad_f_scale64(hi, lo) \
|
||
|
|
((((mad_fixed_t) \
|
||
|
|
(((hi) << (32 - (MAD_F_SCALEBITS - 1))) | \
|
||
|
|
((lo) >> (MAD_F_SCALEBITS - 1)))) + 1) >> 1)
|
||
|
|
# else
|
||
|
|
# define mad_f_scale64(hi, lo) \
|
||
|
|
((mad_fixed_t) \
|
||
|
|
(((hi) << (32 - MAD_F_SCALEBITS)) | \
|
||
|
|
((lo) >> MAD_F_SCALEBITS)))
|
||
|
|
# endif
|
||
|
|
# define MAD_F_SCALEBITS MAD_F_FRACBITS
|
||
|
|
# endif
|
||
|
|
|
||
|
|
/* C routines */
|
||
|
|
|
||
|
|
mad_fixed_t mad_f_abs(mad_fixed_t);
|
||
|
|
mad_fixed_t mad_f_div(mad_fixed_t, mad_fixed_t);
|
||
|
|
|
||
|
|
# endif
|