tied_mgau_common.h
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#ifndef __TIED_MGAU_COMMON_H__
#define __TIED_MGAU_COMMON_H__
#include <sphinxbase/logmath.h>
#include <sphinxbase/fixpoint.h>
#define MGAU_MIXW_VERSION "1.0" /* Sphinx-3 file format version for mixw */
#define MGAU_PARAM_VERSION "1.0" /* Sphinx-3 file format version for mean/var */
#define NONE -1
#define WORST_DIST (int32)(0x80000000)
#ifdef FIXED_POINT
#define GMMSUB(a,b) \
(((a)-(b) > a) ? (INT_MIN) : ((a)-(b)))
#define GMMADD(a,b) \
(((a)+(b) < a) ? (INT_MAX) : ((a)+(b)))
#else
#define GMMSUB(a,b) ((a)-(b))
#define GMMADD(a,b) ((a)+(b))
#endif
#ifndef MIN
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#endif
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
#define LOGMATH_INLINE static inline
#elif defined(_MSC_VER)
#define LOGMATH_INLINE __inline
#else
#define LOGMATH_INLINE static
#endif
/* Allocate 0..159 for negated quantized mixture weights and 0..96 for
* negated normalized acoustic scores, so that the combination of the
* two (for a single mixture) can never exceed 255. */
#define MAX_NEG_MIXW 159
#define MAX_NEG_ASCR 96
LOGMATH_INLINE int
fast_logmath_add(logmath_t *lmath, int mlx, int mly)
{
logadd_t *t = LOGMATH_TABLE(lmath);
int d, r;
/* d must be positive, obviously. */
if (mlx > mly) {
d = (mlx - mly);
r = mly;
}
else {
d = (mly - mlx);
r = mlx;
}
return r - (((uint8 *)t->table)[d]);
}
#endif /* __TIED_MGAU_COMMON_H__ */
fast_logmath_add
LOGMATH_INLINE int fast_logmath_add(logmath_t *lmath, int mlx, int mly)
Quickly log-add two negated log probabilities.
Definition: tied_mgau_common.h:103