JasPer Fixed-Point Number Class. More...

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

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.

Macros

Detailed Description