Coverage Report

Created: 2018-08-20 19:24

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/tools/polly/lib/External/isl/isl_val_sioimath.c
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#include <isl_val_private.h>
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/* Return a reference to an isl_val representing the unsigned
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 * integer value stored in the "n" chunks of size "size" at "chunks".
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 * The least significant chunk is assumed to be stored first.
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 */
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__isl_give isl_val *isl_val_int_from_chunks(isl_ctx *ctx, size_t n,
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  size_t size, const void *chunks)
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{
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  isl_val *v;
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  v = isl_val_alloc(ctx);
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  if (!v)
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    return NULL;
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  impz_import(isl_sioimath_reinit_big(v->n), n, -1, size, 0, 0, chunks);
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  isl_sioimath_try_demote(v->n);
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  isl_int_set_si(v->d, 1);
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  return v;
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}
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/* Store a representation of the absolute value of the numerator of "v"
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 * in terms of chunks of size "size" at "chunks".
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 * The least significant chunk is stored first.
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 * The number of chunks in the result can be obtained by calling
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 * isl_val_n_abs_num_chunks.  The user is responsible for allocating
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 * enough memory to store the results.
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 *
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 * In the special case of a zero value, isl_val_n_abs_num_chunks will
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 * return one, while impz_export will not fill in any chunks.  We therefore
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 * do it ourselves.
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 */
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int isl_val_get_abs_num_chunks(__isl_keep isl_val *v, size_t size,
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  void *chunks)
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{
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  isl_sioimath_scratchspace_t scratch;
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  if (!v || !chunks)
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    return -1;
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  if (!isl_val_is_rat(v))
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isl_die0
(isl_val_get_ctx(v), isl_error_invalid,
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      "expecting rational value", return -1);
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  impz_export(chunks, NULL, -1, size, 0, 0,
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      isl_sioimath_bigarg_src(*v->n, &scratch));
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  if (isl_val_is_zero(v))
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    memset(chunks, 0, size);
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  return 0;
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}
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/* Return the number of chunks of size "size" required to
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 * store the absolute value of the numerator of "v".
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 */
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size_t isl_val_n_abs_num_chunks(__isl_keep isl_val *v, size_t size)
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{
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  if (!v)
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    return 0;
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  if (!isl_val_is_rat(v))
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isl_die0
(isl_val_get_ctx(v), isl_error_invalid,
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      "expecting rational value", return 0);
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  size *= 8;
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  return (isl_sioimath_sizeinbase(*v->n, 2) + size - 1) / size;
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}