Leaked source code of windows server 2003
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#define FILEIO 0
// Assembly switches for MMX code
#ifdef _X86_
#if !defined(COMPILE_MMX)
#define COMPILE_MMX 1
#endif
#endif
#ifdef _ALPHA_
//No MMX on Alpha
#if defined(COMPILE_MMX)
#undef COMPILE_MMX
#endif
#endif
#if COMPILE_MMX
#define ASM_FTOSS 1
#define ASM_CORR 1
#define ASM_SVQ 1
#define ASM_FACBK 1
#else
#define ASM_FTOSS 0
#define ASM_CORR 0
#define ASM_SVQ 0
#define ASM_FACBK 0
#endif
// These don't make a numerical difference (compared to model code)
// ...
#ifdef _X86_
#define OPT_PULSE4 1
#define OPT_FLOOR 1
#define OPT_ACBKF 1
#endif
// These are the tricks from FT
#define FT_FBFILT 1 // much faster Find_Best filter that exploits 0's
#define FT_FINDL 1 // faster Find_L with OccPos test removed
// These make a minor numerical difference (max diff = 1)
#ifdef _X86_
#define OPT_DOT 1 // assembly dot product
#define OPT_REV 1 // assembly reverse dot product
#define FIND_L_OPT 1
#endif
//These can't change for alpha
#ifdef _ALPHA_
#define OPT_DOT 0 // assembly dot product
#define OPT_REV 0 // assembly reverse dot product
#define FIND_L_OPT 0
#endif //Alpha
// Bits in "shortcut" flag
#define SC_FINDB 1 // only do 1 Find_Best per subframe
//#define SC_GAIN 2 // only search every other gain
#define SC_GAIN 0
#define SC_LAG1 4 // only search lag=1 in acbk gain search
#define SC_THRES 8 // use 75% of max instead of 50% for codebook threshold
#define SC_DEF (SC_LAG1 | SC_GAIN | SC_FINDB | SC_THRES) // use all shortcuts
#define asint(x) (*(int *)&(x)) // look as FP value as an int
#define ASM __asm
#define QP QWORD PTR
#define DP DWORD PTR
#define WP WORD PTR
#define fxch(n) ASM fxch ST(n)
//no ';' at end of definition so that can be used as
// DECLARE_CHAR(mybytes, 100);
// DECLARE_SHORT(mywords, 32);
// ...
// ALIGN_ARRAY(mybytes);
// ALIGN_ARRAY(mywords);
#define DECLARE_CHAR(array,size) \
char array##_raw[size+8/sizeof(char)]; \ char *array
#define DECLARE_SHORT(array,size) \
short array##_raw[size+8/sizeof(short)]; \ short *array
#define DECLARE_INT(array,size) \
int array##_raw[size+8/sizeof(int)]; \ int *array
#define ALIGN_ARRAY(array) \
array = array##_raw; \ __asm mov eax,array \ __asm add eax,7 \ __asm and eax,0fffffff8h \ __asm mov array,eax
#define ALIGN_SHORT_OFFSET(array,offset) \
array = array##_raw; \ __asm mov eax,array \ __asm mov ebx,offset \ __asm shl ebx,1 \ __asm add eax, ebx \ __asm add eax,7 \ __asm and eax,0fffffff8h \ __asm sub eax,ebx \ __asm mov array,eax
#define DECLARE_STRUCTPTR(type,array) \
struct {type data; char dummy[8];} array##_raw; \ type *array
#define ALIGN_STRUCTPTR(array) \
array = &array##_raw.data; \ __asm mov eax,array \ __asm add eax,7 \ __asm and eax,0fffffff8h \ __asm mov array,eax
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