78 #include <jasper/jas_config.h> 80 #include <jasper/jas_types.h> 91 #define JAS_FIX_ZERO(fix_t, fracbits) \ 95 #define JAS_FIX_ONE(fix_t, fracbits) \ 96 (JAS_CAST(fix_t, 1) << (fracbits)) 99 #define JAS_FIX_HALF(fix_t, fracbits) \ 100 (JAS_CAST(fix_t, 1) << ((fracbits) - 1)) 107 #define JAS_INTTOFIX(fix_t, fracbits, x) \ 108 JAS_CAST(fix_t, (x) << (fracbits)) 111 #define JAS_FIXTOINT(fix_t, fracbits, x) \ 112 JAS_CAST(int, (x) >> (fracbits)) 115 #define JAS_FIXTODBL(fix_t, fracbits, x) \ 116 (JAS_CAST(double, x) / (JAS_CAST(fix_t, 1) << (fracbits))) 119 #define JAS_DBLTOFIX(fix_t, fracbits, x) \ 120 JAS_CAST(fix_t, ((x) * JAS_CAST(double, JAS_CAST(fix_t, 1) << (fracbits)))) 133 #if !defined(DEBUG_OVERFLOW) 134 #define JAS_FIX_ADD JAS_FIX_ADD_FAST 136 #define JAS_FIX_ADD JAS_FIX_ADD_OFLOW 140 #define JAS_FIX_ADD_FAST(fix_t, fracbits, x, y) ((x) + (y)) 143 #define JAS_FIX_ADD_OFLOW(fix_t, fracbits, x, y) \ 145 (((y) >= 0) ? ((x) + (y) >= 0 || JAS_FIX_OFLOW(), (x) + (y)) : \ 147 (((y) >= 0) ? ((x) + (y)) : ((x) + (y) < 0 || JAS_FIX_OFLOW(), \ 151 #if !defined(DEBUG_OVERFLOW) 152 #define JAS_FIX_MUL JAS_FIX_MUL_FAST 154 #define JAS_FIX_MUL JAS_FIX_MUL_OFLOW 159 #define JAS_FIX_MUL_FAST(fix_t, fracbits, bigfix_t, x, y) \ 160 JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) * JAS_CAST(bigfix_t, y)) >> \ 165 #define JAS_FIX_MUL_OFLOW(fix_t, fracbits, bigfix_t, x, y) \ 166 ((JAS_CAST(bigfix_t, x) * JAS_CAST(bigfix_t, y) >> (fracbits)) == \ 167 JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) * JAS_CAST(bigfix_t, y) >> \ 169 JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) * JAS_CAST(bigfix_t, y) >> \ 170 (fracbits))) : JAS_FIX_OFLOW()) 173 #if !defined(DEBUG_OVERFLOW) 174 #define JAS_FIX_MULBYINT JAS_FIX_MULBYINT_FAST 176 #define JAS_FIX_MULBYINT JAS_FIX_MULBYINT_OFLOW 181 #define JAS_FIX_MULBYINT_FAST(fix_t, fracbits, x, y) \ 182 JAS_CAST(fix_t, ((x) * (y))) 186 #define JAS_FIX_MULBYINT_OFLOW(fix_t, fracbits, x, y) \ 187 JAS_FIX_MULBYINT_FAST(fix_t, fracbits, x, y) 190 #if !defined(DEBUG_OVERFLOW) 191 #define JAS_FIX_DIV JAS_FIX_DIV_FAST 193 #define JAS_FIX_DIV JAS_FIX_DIV_UFLOW 198 #define JAS_FIX_DIV_FAST(fix_t, fracbits, bigfix_t, x, y) \ 199 JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) << (fracbits)) / (y)) 203 #define JAS_FIX_DIV_UFLOW(fix_t, fracbits, bigfix_t, x, y) \ 204 JAS_FIX_DIV_FAST(fix_t, fracbits, bigfix_t, x, y) 207 #if !defined(DEBUG_OVERFLOW) 208 #define JAS_FIX_NEG JAS_FIX_NEG_FAST 210 #define JAS_FIX_NEG JAS_FIX_NEG_OFLOW 214 #define JAS_FIX_NEG_FAST(fix_t, fracbits, x) \ 220 #define JAS_FIX_NEG_OFLOW(fix_t, fracbits, x) \ 221 (((x) < 0) ? (-(x) > 0 || JAS_FIX_OFLOW(), -(x)) : (-(x))) 224 #if !defined(DEBUG_OVERFLOW) 225 #define JAS_FIX_ASL JAS_FIX_ASL_FAST 227 #define JAS_FIX_ASL JAS_FIX_ASL_OFLOW 232 #define JAS_FIX_ASL_FAST(fix_t, fracbits, x, n) \ 237 #define JAS_FIX_ASL_OFLOW(fix_t, fracbits, x, n) \ 238 ((((x) << (n)) >> (n)) == (x) || JAS_FIX_OFLOW(), (x) << (n)) 241 #if !defined(DEBUG_OVERFLOW) 242 #define JAS_FIX_ASR JAS_FIX_ASR_FAST 244 #define JAS_FIX_ASR JAS_FIX_ASR_UFLOW 249 #define JAS_FIX_ASR_FAST(fix_t, fracbits, x, n) \ 254 #define JAS_FIX_ASR_UFLOW(fix_t, fracbits, x, n) \ 255 JAS_FIX_ASR_FAST(fix_t, fracbits, x, n) 262 #define JAS_FIX_SUB(fix_t, fracbits, x, y) \ 263 JAS_FIX_ADD(fix_t, fracbits, x, JAS_FIX_NEG(fix_t, fracbits, y)) 266 #define JAS_FIX_PLUSEQ(fix_t, fracbits, x, y) \ 267 ((x) = JAS_FIX_ADD(fix_t, fracbits, x, y)) 270 #define JAS_FIX_MINUSEQ(fix_t, fracbits, x, y) \ 271 ((x) = JAS_FIX_SUB(fix_t, fracbits, x, y)) 274 #define JAS_FIX_MULEQ(fix_t, fracbits, bigfix_t, x, y) \ 275 ((x) = JAS_FIX_MUL(fix_t, fracbits, bigfix_t, x, y)) 282 #define JAS_FIX_ABS(fix_t, fracbits, x) \ 283 (((x) >= 0) ? (x) : (JAS_FIX_NEG(fix_t, fracbits, x))) 286 #define JAS_FIX_ISINT(fix_t, fracbits, x) \ 287 (JAS_FIX_FLOOR(fix_t, fracbits, x) == (x)) 290 #define JAS_FIX_SGN(fix_t, fracbits, x) \ 291 ((x) >= 0 ? 1 : (-1)) 298 #define JAS_FIX_CMP(fix_t, fracbits, x, y) \ 299 ((x) > (y) ? 1 : (((x) == (y)) ? 0 : (-1))) 302 #define JAS_FIX_LT(fix_t, fracbits, x, y) \ 306 #define JAS_FIX_LTE(fix_t, fracbits, x, y) \ 310 #define JAS_FIX_GT(fix_t, fracbits, x, y) \ 314 #define JAS_FIX_GTE(fix_t, fracbits, x, y) \ 322 #define JAS_FIX_ROUND(fix_t, fracbits, x) \ 323 (((x) < 0) ? JAS_FIX_FLOOR(fix_t, fracbits, JAS_FIX_ADD(fix_t, fracbits, \ 324 (x), JAS_FIX_HALF(fix_t, fracbits))) : \ 325 JAS_FIX_NEG(fix_t, fracbits, JAS_FIX_FLOOR(fix_t, fracbits, \ 326 JAS_FIX_ADD(fix_t, fracbits, (-(x)), JAS_FIX_HALF(fix_t, fracbits))))) 330 #define JAS_FIX_FLOOR(fix_t, fracbits, x) \ 331 ((x) & (~((JAS_CAST(fix_t, 1) << (fracbits)) - 1))) 335 #define JAS_FIX_TRUNC(fix_t, fracbits, x) \ 336 (((x) >= 0) ? JAS_FIX_FLOOR(fix_t, fracbits, x) : \ 337 JAS_FIX_CEIL(fix_t, fracbits, x)) 345 #define JAS_FIX_OFLOW() \ 346 jas_eprintf("overflow error: file %s, line %d\n", __FILE__, __LINE__) 349 #define JAS_FIX_UFLOW() \ 350 jas_eprintf("underflow error: file %s, line %d\n", __FILE__, __LINE__)