JasPer  3.0.1
Macros
jas_fix.h File Reference

JasPer Fixed-Point Number Class. More...

#include <jasper/jas_config.h>
#include <jasper/jas_types.h>

Go to the source code of this file.

Macros

#define JAS_FIX_ZERO(fix_t, fracbits)   JAS_INTTOFIX(fix_t, fracbits, 0)
 
#define JAS_FIX_ONE(fix_t, fracbits)   JAS_INTTOFIX(fix_t, fracbits, 1)
 
#define JAS_FIX_HALF(fix_t, fracbits)   (JAS_CAST(fix_t, 1) << ((fracbits) - 1))
 
#define JAS_INTTOFIX(fix_t, fracbits, x)   (JAS_CAST(fix_t, x) << (fracbits))
 
#define JAS_FIXTOINT(fix_t, fracbits, x)   JAS_CAST(int, (x) >> (fracbits))
 
#define JAS_FIXTODBL(fix_t, fracbits, x)   (JAS_CAST(double, x) / JAS_FIX_ONE(fix_t, fracbits))
 
#define JAS_DBLTOFIX(fix_t, fracbits, x)   JAS_CAST(fix_t, ((x) * JAS_CAST(double, JAS_FIX_ONE(fix_t, fracbits))))
 
#define JAS_FIX_ADD   JAS_FIX_ADD_FAST
 
#define JAS_FIX_ADD_FAST(fix_t, fracbits, x, y)   ((x) + (y))
 
#define JAS_FIX_ADD_OFLOW(fix_t, fracbits, x, y)
 
#define JAS_FIX_MUL   JAS_FIX_MUL_FAST
 
#define JAS_FIX_MUL_FAST(fix_t, fracbits, bigfix_t, x, y)
 
#define JAS_FIX_MUL_OFLOW(fix_t, fracbits, bigfix_t, x, y)
 
#define JAS_FIX_MULBYINT   JAS_FIX_MULBYINT_FAST
 
#define JAS_FIX_MULBYINT_FAST(fix_t, fracbits, x, y)   JAS_CAST(fix_t, ((x) * (y)))
 
#define JAS_FIX_MULBYINT_OFLOW(fix_t, fracbits, x, y)   JAS_FIX_MULBYINT_FAST(fix_t, fracbits, x, y)
 
#define JAS_FIX_DIV   JAS_FIX_DIV_FAST
 
#define JAS_FIX_DIV_FAST(fix_t, fracbits, bigfix_t, x, y)   JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) << (fracbits)) / (y))
 
#define JAS_FIX_DIV_UFLOW(fix_t, fracbits, bigfix_t, x, y)   JAS_FIX_DIV_FAST(fix_t, fracbits, bigfix_t, x, y)
 
#define JAS_FIX_NEG   JAS_FIX_NEG_FAST
 
#define JAS_FIX_NEG_FAST(fix_t, fracbits, x)   (-(x))
 
#define JAS_FIX_NEG_OFLOW(fix_t, fracbits, x)   (((x) < 0) ? (-(x) > 0 || JAS_FIX_OFLOW(), -(x)) : (-(x)))
 
#define JAS_FIX_ASL   JAS_FIX_ASL_FAST
 
#define JAS_FIX_ASL_FAST(fix_t, fracbits, x, n)   ((x) << (n))
 
#define JAS_FIX_ASL_OFLOW(fix_t, fracbits, x, n)   ((((x) << (n)) >> (n)) == (x) || JAS_FIX_OFLOW(), (x) << (n))
 
#define JAS_FIX_ASR   JAS_FIX_ASR_FAST
 
#define JAS_FIX_ASR_FAST(fix_t, fracbits, x, n)   ((x) >> (n))
 
#define JAS_FIX_ASR_UFLOW(fix_t, fracbits, x, n)   JAS_FIX_ASR_FAST(fix_t, fracbits, x, n)
 
#define JAS_FIX_SUB(fix_t, fracbits, x, y)   JAS_FIX_ADD(fix_t, fracbits, x, JAS_FIX_NEG(fix_t, fracbits, y))
 
#define JAS_FIX_PLUSEQ(fix_t, fracbits, x, y)   ((x) = JAS_FIX_ADD(fix_t, fracbits, x, y))
 
#define JAS_FIX_MINUSEQ(fix_t, fracbits, x, y)   ((x) = JAS_FIX_SUB(fix_t, fracbits, x, y))
 
#define JAS_FIX_MULEQ(fix_t, fracbits, bigfix_t, x, y)   ((x) = JAS_FIX_MUL(fix_t, fracbits, bigfix_t, x, y))
 
#define JAS_FIX_ABS(fix_t, fracbits, x)   (((x) >= 0) ? (x) : (JAS_FIX_NEG(fix_t, fracbits, x)))
 
#define JAS_FIX_ISINT(fix_t, fracbits, x)   (JAS_FIX_FLOOR(fix_t, fracbits, x) == (x))
 
#define JAS_FIX_SGN(fix_t, fracbits, x)   ((x) >= 0 ? 1 : (-1))
 
#define JAS_FIX_CMP(fix_t, fracbits, x, y)   ((x) > (y) ? 1 : (((x) == (y)) ? 0 : (-1)))
 
#define JAS_FIX_LT(fix_t, fracbits, x, y)   ((x) < (y))
 
#define JAS_FIX_LTE(fix_t, fracbits, x, y)   ((x) <= (y))
 
#define JAS_FIX_GT(fix_t, fracbits, x, y)   ((x) > (y))
 
#define JAS_FIX_GTE(fix_t, fracbits, x, y)   ((x) >= (y))
 
#define JAS_FIX_ROUND(fix_t, fracbits, x)
 
#define JAS_FIX_FLOOR(fix_t, fracbits, x)   ((x) & (~(JAS_FIX_ONE(fix_t, fracbits) - 1)))
 

Detailed Description

JasPer Fixed-Point Number Class.