78 #include <jasper/jas_config.h>    84 #include <jasper/jas_types.h>    85 #include <jasper/jas_debug.h>    96 #define JAS_FIX_ZERO(fix_t, fracbits) \   100 #define JAS_FIX_ONE(fix_t, fracbits) \   101         (JAS_CAST(fix_t, 1) << (fracbits))   104 #define JAS_FIX_HALF(fix_t, fracbits) \   105         (JAS_CAST(fix_t, 1) << ((fracbits) - 1))   112 #define JAS_INTTOFIX(fix_t, fracbits, x) \   113         JAS_CAST(fix_t, (x) << (fracbits))   116 #define JAS_FIXTOINT(fix_t, fracbits, x) \   117         JAS_CAST(int, (x) >> (fracbits))   120 #define JAS_FIXTODBL(fix_t, fracbits, x) \   121         (JAS_CAST(double, x) / (JAS_CAST(fix_t, 1) << (fracbits)))   124 #define JAS_DBLTOFIX(fix_t, fracbits, x) \   125         JAS_CAST(fix_t, ((x) * JAS_CAST(double, JAS_CAST(fix_t, 1) << (fracbits))))   138 #if !defined(DEBUG_OVERFLOW)   139 #define JAS_FIX_ADD                     JAS_FIX_ADD_FAST   141 #define JAS_FIX_ADD                     JAS_FIX_ADD_OFLOW   145 #define JAS_FIX_ADD_FAST(fix_t, fracbits, x, y) ((x) + (y))   148 #define JAS_FIX_ADD_OFLOW(fix_t, fracbits, x, y) \   150           (((y) >= 0) ? ((x) + (y) >= 0 || JAS_FIX_OFLOW(), (x) + (y)) : \   152           (((y) >= 0) ? ((x) + (y)) : ((x) + (y) < 0 || JAS_FIX_OFLOW(), \   156 #if !defined(DEBUG_OVERFLOW)   157 #define JAS_FIX_MUL                     JAS_FIX_MUL_FAST   159 #define JAS_FIX_MUL                     JAS_FIX_MUL_OFLOW   164 #define JAS_FIX_MUL_FAST(fix_t, fracbits, bigfix_t, x, y) \   165         JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) * JAS_CAST(bigfix_t, y)) >> \   170 #define JAS_FIX_MUL_OFLOW(fix_t, fracbits, bigfix_t, x, y) \   171         ((JAS_CAST(bigfix_t, x) * JAS_CAST(bigfix_t, y) >> (fracbits)) == \   172           JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) * JAS_CAST(bigfix_t, y) >> \   174           JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) * JAS_CAST(bigfix_t, y) >> \   175           (fracbits))) : JAS_FIX_OFLOW())   178 #if !defined(DEBUG_OVERFLOW)   179 #define JAS_FIX_MULBYINT        JAS_FIX_MULBYINT_FAST   181 #define JAS_FIX_MULBYINT        JAS_FIX_MULBYINT_OFLOW   186 #define JAS_FIX_MULBYINT_FAST(fix_t, fracbits, x, y) \   187         JAS_CAST(fix_t, ((x) * (y)))   191 #define JAS_FIX_MULBYINT_OFLOW(fix_t, fracbits, x, y) \   192         JAS_FIX_MULBYINT_FAST(fix_t, fracbits, x, y)   195 #if !defined(DEBUG_OVERFLOW)   196 #define JAS_FIX_DIV                     JAS_FIX_DIV_FAST   198 #define JAS_FIX_DIV                     JAS_FIX_DIV_UFLOW   203 #define JAS_FIX_DIV_FAST(fix_t, fracbits, bigfix_t, x, y) \   204         JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) << (fracbits)) / (y))   208 #define JAS_FIX_DIV_UFLOW(fix_t, fracbits, bigfix_t, x, y) \   209         JAS_FIX_DIV_FAST(fix_t, fracbits, bigfix_t, x, y)   212 #if !defined(DEBUG_OVERFLOW)   213 #define JAS_FIX_NEG                     JAS_FIX_NEG_FAST   215 #define JAS_FIX_NEG                     JAS_FIX_NEG_OFLOW   219 #define JAS_FIX_NEG_FAST(fix_t, fracbits, x) \   225 #define JAS_FIX_NEG_OFLOW(fix_t, fracbits, x) \   226         (((x) < 0) ? (-(x) > 0 || JAS_FIX_OFLOW(), -(x)) : (-(x)))   229 #if !defined(DEBUG_OVERFLOW)   230 #define JAS_FIX_ASL                     JAS_FIX_ASL_FAST   232 #define JAS_FIX_ASL                     JAS_FIX_ASL_OFLOW   237 #define JAS_FIX_ASL_FAST(fix_t, fracbits, x, n) \   242 #define JAS_FIX_ASL_OFLOW(fix_t, fracbits, x, n) \   243         ((((x) << (n)) >> (n)) == (x) || JAS_FIX_OFLOW(), (x) << (n))   246 #if !defined(DEBUG_OVERFLOW)   247 #define JAS_FIX_ASR                     JAS_FIX_ASR_FAST   249 #define JAS_FIX_ASR                     JAS_FIX_ASR_UFLOW   254 #define JAS_FIX_ASR_FAST(fix_t, fracbits, x, n) \   259 #define JAS_FIX_ASR_UFLOW(fix_t, fracbits, x, n) \   260         JAS_FIX_ASR_FAST(fix_t, fracbits, x, n)   267 #define JAS_FIX_SUB(fix_t, fracbits, x, y) \   268         JAS_FIX_ADD(fix_t, fracbits, x, JAS_FIX_NEG(fix_t, fracbits, y))   271 #define JAS_FIX_PLUSEQ(fix_t, fracbits, x, y) \   272         ((x) = JAS_FIX_ADD(fix_t, fracbits, x, y))   275 #define JAS_FIX_MINUSEQ(fix_t, fracbits, x, y) \   276         ((x) = JAS_FIX_SUB(fix_t, fracbits, x, y))   279 #define JAS_FIX_MULEQ(fix_t, fracbits, bigfix_t, x, y) \   280         ((x) = JAS_FIX_MUL(fix_t, fracbits, bigfix_t, x, y))   287 #define JAS_FIX_ABS(fix_t, fracbits, x) \   288         (((x) >= 0) ? (x) : (JAS_FIX_NEG(fix_t, fracbits, x)))   291 #define JAS_FIX_ISINT(fix_t, fracbits, x) \   292         (JAS_FIX_FLOOR(fix_t, fracbits, x) == (x))   295 #define JAS_FIX_SGN(fix_t, fracbits, x) \   296         ((x) >= 0 ? 1 : (-1))   303 #define JAS_FIX_CMP(fix_t, fracbits, x, y) \   304         ((x) > (y) ? 1 : (((x) == (y)) ? 0 : (-1)))   307 #define JAS_FIX_LT(fix_t, fracbits, x, y) \   311 #define JAS_FIX_LTE(fix_t, fracbits, x, y) \   315 #define JAS_FIX_GT(fix_t, fracbits, x, y) \   319 #define JAS_FIX_GTE(fix_t, fracbits, x, y) \   327 #define JAS_FIX_ROUND(fix_t, fracbits, x) \   328         (((x) < 0) ? JAS_FIX_FLOOR(fix_t, fracbits, JAS_FIX_ADD(fix_t, fracbits, \   329           (x), JAS_FIX_HALF(fix_t, fracbits))) : \   330           JAS_FIX_NEG(fix_t, fracbits, JAS_FIX_FLOOR(fix_t, fracbits, \   331           JAS_FIX_ADD(fix_t, fracbits, (-(x)), JAS_FIX_HALF(fix_t, fracbits)))))   335 #define JAS_FIX_FLOOR(fix_t, fracbits, x) \   336         ((x) & (~((JAS_CAST(fix_t, 1) << (fracbits)) - 1)))   340 #define JAS_FIX_TRUNC(fix_t, fracbits, x) \   341         (((x) >= 0) ? JAS_FIX_FLOOR(fix_t, fracbits, x) : \   342           JAS_FIX_CEIL(fix_t, fracbits, x))   350 #define JAS_FIX_OFLOW() \   351         jas_eprintf("overflow error: file %s, line %d\n", __FILE__, __LINE__)   354 #define JAS_FIX_UFLOW() \   355         jas_eprintf("underflow error: file %s, line %d\n", __FILE__, __LINE__)