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__)