Changeset 9771488 for src/mathutils.c
 Timestamp:
 Mar 21, 2006, 7:05:23 PM (14 years ago)
 Branches:
 feature/autosink, feature/constantq, feature/pitchshift, feature/pydocstrings, feature/timestretch, master, pitchshift, sampler, timestretch, yinfft+
 Children:
 d94f98b
 Parents:
 1d4fc4a
 File:

 1 edited
Legend:
 Unmodified
 Added
 Removed

src/mathutils.c
r1d4fc4a r9771488 331 331 } 332 332 333 smpl_t vec_quadint_min(fvec_t * x,uint_t pos, uint_t span) { 334 smpl_t step = 1./200.; 335 /* init resold to  something (in case x[pos+span]<0)) */ 336 smpl_t res, frac, s0, s1, s2, exactpos = (smpl_t)pos, resold = 100000.; 337 if ((pos > span) && (pos < x>lengthspan)) { 338 s0 = x>data[0][posspan]; 339 s1 = x>data[0][pos] ; 340 s2 = x>data[0][pos+span]; 341 /* increase frac */ 342 for (frac = 0.; frac < 2.; frac = frac + step) { 343 res = aubio_quadfrac(s0, s1, s2, frac); 344 if (res < resold) { 345 resold = res; 346 } else { 347 exactpos += (fracstep)*span  span/2.; 348 break; 349 } 350 } 351 } 352 return exactpos; 353 } 354 333 355 smpl_t aubio_quadfrac(smpl_t s0, smpl_t s1, smpl_t s2, smpl_t pf) { 334 356 smpl_t tmp = s0 + (pf/2.) * (pf * ( s0  2.*s1 + s2 )  3.*s0 + 4.*s1  s2);
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