blosc2-sys 0.4.0+2.15.2

Bindings to C Blosc2
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/* decompress 1d contiguous array */
static void
_t2(decompress, Scalar, 1)(zfp_stream* stream, zfp_field* field)
{
  Scalar* data = (Scalar*)field->data;
  size_t nx = field->nx;
  size_t mx = nx & ~3u;
  size_t x;

  /* decompress array one block of 4 values at a time */
  for (x = 0; x < mx; x += 4, data += 4)
    _t2(zfp_decode_block, Scalar, 1)(stream, data);
  if (x < nx)
    _t2(zfp_decode_partial_block_strided, Scalar, 1)(stream, data, nx - x, 1);
}

/* decompress 1d strided array */
static void
_t2(decompress_strided, Scalar, 1)(zfp_stream* stream, zfp_field* field)
{
  Scalar* data = field->data;
  size_t nx = field->nx;
  ptrdiff_t sx = field->sx ? field->sx : 1;
  size_t x;

  /* decompress array one block of 4 values at a time */
  for (x = 0; x < nx; x += 4) {
    Scalar* p = data + sx * (ptrdiff_t)x;
    if (nx - x < 4)
      _t2(zfp_decode_partial_block_strided, Scalar, 1)(stream, p, nx - x, sx);
    else
      _t2(zfp_decode_block_strided, Scalar, 1)(stream, p, sx);
  }
}

/* decompress 2d strided array */
static void
_t2(decompress_strided, Scalar, 2)(zfp_stream* stream, zfp_field* field)
{
  Scalar* data = (Scalar*)field->data;
  size_t nx = field->nx;
  size_t ny = field->ny;
  ptrdiff_t sx = field->sx ? field->sx : 1;
  ptrdiff_t sy = field->sy ? field->sy : (ptrdiff_t)nx;
  size_t x, y;

  /* decompress array one block of 4x4 values at a time */
  for (y = 0; y < ny; y += 4)
    for (x = 0; x < nx; x += 4) {
      Scalar* p = data + sx * (ptrdiff_t)x + sy * (ptrdiff_t)y;
      if (nx - x < 4 || ny - y < 4)
        _t2(zfp_decode_partial_block_strided, Scalar, 2)(stream, p, MIN(nx - x, 4u), MIN(ny - y, 4u), sx, sy);
      else
        _t2(zfp_decode_block_strided, Scalar, 2)(stream, p, sx, sy);
    }
}

/* decompress 3d strided array */
static void
_t2(decompress_strided, Scalar, 3)(zfp_stream* stream, zfp_field* field)
{
  Scalar* data = (Scalar*)field->data;
  size_t nx = field->nx;
  size_t ny = field->ny;
  size_t nz = field->nz;
  ptrdiff_t sx = field->sx ? field->sx : 1;
  ptrdiff_t sy = field->sy ? field->sy : (ptrdiff_t)nx;
  ptrdiff_t sz = field->sz ? field->sz : (ptrdiff_t)(nx * ny);
  size_t x, y, z;

  /* decompress array one block of 4x4x4 values at a time */
  for (z = 0; z < nz; z += 4)
    for (y = 0; y < ny; y += 4)
      for (x = 0; x < nx; x += 4) {
        Scalar* p = data + sx * (ptrdiff_t)x + sy * (ptrdiff_t)y + sz * (ptrdiff_t)z;
        if (nx - x < 4 || ny - y < 4 || nz - z < 4)
          _t2(zfp_decode_partial_block_strided, Scalar, 3)(stream, p, MIN(nx - x, 4u), MIN(ny - y, 4u), MIN(nz - z, 4u), sx, sy, sz);
        else
          _t2(zfp_decode_block_strided, Scalar, 3)(stream, p, sx, sy, sz);
      }
}

/* decompress 4d strided array */
static void
_t2(decompress_strided, Scalar, 4)(zfp_stream* stream, zfp_field* field)
{
  Scalar* data = field->data;
  size_t nx = field->nx;
  size_t ny = field->ny;
  size_t nz = field->nz;
  size_t nw = field->nw;
  ptrdiff_t sx = field->sx ? field->sx : 1;
  ptrdiff_t sy = field->sy ? field->sy : (ptrdiff_t)nx;
  ptrdiff_t sz = field->sz ? field->sz : (ptrdiff_t)(nx * ny);
  ptrdiff_t sw = field->sw ? field->sw : (ptrdiff_t)(nx * ny * nz);
  size_t x, y, z, w;

  /* decompress array one block of 4x4x4x4 values at a time */
  for (w = 0; w < nw; w += 4)
    for (z = 0; z < nz; z += 4)
      for (y = 0; y < ny; y += 4)
        for (x = 0; x < nx; x += 4) {
          Scalar* p = data + sx * (ptrdiff_t)x + sy * (ptrdiff_t)y + sz * (ptrdiff_t)z + sw * (ptrdiff_t)w;
          if (nx - x < 4 || ny - y < 4 || nz - z < 4 || nw - w < 4)
            _t2(zfp_decode_partial_block_strided, Scalar, 4)(stream, p, MIN(nx - x, 4u), MIN(ny - y, 4u), MIN(nz - z, 4u), MIN(nw - w, 4u), sx, sy, sz, sw);
          else
            _t2(zfp_decode_block_strided, Scalar, 4)(stream, p, sx, sy, sz, sw);
        }
}