mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-05-01 12:20:26 +02:00
d96208cc72
symbols to expect 0 or 1 values rather than 1 or undefined. i.e. change #ifdef to #if, etc.
302 lines
7.8 KiB
C
302 lines
7.8 KiB
C
/* this file is #include'd (x times) by convert.c */
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/* Convert a vector, weak vector, (if possible string, substring), list
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or uniform vector into an C array. If the result array in argument 2
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is NULL, malloc() a new one. If out of memory, return NULL. */
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#define FUNC_NAME SCM2CTYPES_FN
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CTYPE *
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SCM2CTYPES (SCM obj, CTYPE *data)
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{
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long i, n;
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SCM val;
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SCM_ASSERT (SCM_NIMP (obj) || SCM_NFALSEP (scm_list_p (obj)),
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obj, SCM_ARG1, FUNC_NAME);
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/* list conversion */
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if (SCM_NFALSEP (scm_list_p (obj)))
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{
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/* traverse the given list and validate the range of each member */
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SCM list = obj;
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for (n = 0; SCM_NFALSEP (scm_pair_p (list)); list = SCM_CDR (list), n++)
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{
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val = SCM_CAR (list);
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#if SIZEOF_CTYPE && SIZEOF_CTYPE < SIZEOF_SCM_T_BITS
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/* check integer ranges */
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if (SCM_INUMP (val))
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{
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scm_t_signed_bits v = SCM_INUM (val);
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CTYPE c = (CTYPE) v;
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SCM_ASSERT_RANGE (SCM_ARG1, val, v != (scm_t_signed_bits) c);
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}
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/* check big number ranges */
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else if (SCM_BIGP (val))
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{
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scm_t_signed_bits v = scm_num2long (val, SCM_ARG1, FUNC_NAME);
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CTYPE c = (CTYPE) v;
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SCM_ASSERT_RANGE (SCM_ARG1, val, v != (scm_t_signed_bits) c);
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}
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else
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/* check float types */
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#elif defined (FLOATTYPE)
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/* real values, big numbers and immediate values are valid
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for float conversions */
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if (!SCM_REALP (val) && !SCM_BIGP (val) && !SCM_INUMP (val))
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#else
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if (!SCM_BIGP (val) && !SCM_INUMP (val))
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#endif /* FLOATTYPE */
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SCM_WRONG_TYPE_ARG (SCM_ARG1, val);
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}
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/* allocate new memory if necessary */
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if (data == NULL)
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if ((data = (CTYPE *) malloc (n * sizeof (CTYPE))) == NULL)
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return NULL;
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/* traverse the list once more and convert each member */
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list = obj;
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for (i = 0; SCM_NFALSEP (scm_pair_p (list)); list = SCM_CDR (list), i++)
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{
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val = SCM_CAR (list);
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if (SCM_INUMP (val))
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data[i] = (CTYPE) SCM_INUM (val);
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else if (SCM_BIGP (val))
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data[i] = (CTYPE) scm_num2long (val, SCM_ARG1, FUNC_NAME);
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#if defined (FLOATTYPE)
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else
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data[i] = (CTYPE) SCM_REAL_VALUE (val);
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#endif
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}
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return data;
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}
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/* other conversions */
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switch (SCM_TYP7 (obj))
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{
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/* vectors and weak vectors */
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case scm_tc7_vector:
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case scm_tc7_wvect:
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n = SCM_VECTOR_LENGTH (obj);
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/* traverse the given vector and validate each member */
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for (i = 0; i < n; i++)
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{
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val = SCM_VELTS (obj)[i];
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#if SIZEOF_CTYPE && SIZEOF_CTYPE < SIZEOF_SCM_T_BITS
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/* check integer ranges */
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if (SCM_INUMP (val))
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{
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scm_t_signed_bits v = SCM_INUM (val);
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CTYPE c = (CTYPE) v;
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SCM_ASSERT_RANGE (SCM_ARG1, val, v != (scm_t_signed_bits) c);
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}
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/* check big number ranges */
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else if (SCM_BIGP (val))
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{
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scm_t_signed_bits v = scm_num2long (val, SCM_ARG1, FUNC_NAME);
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CTYPE c = (CTYPE) v;
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SCM_ASSERT_RANGE (SCM_ARG1, val, v != (scm_t_signed_bits) c);
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}
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else
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/* check float types */
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#elif defined (FLOATTYPE)
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/* real values, big numbers and immediate values are valid
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for float conversions */
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if (!SCM_REALP (val) && !SCM_BIGP (val) && !SCM_INUMP (val))
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#else
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if (!SCM_BIGP (val) && !SCM_INUMP (val))
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#endif /* FLOATTYPE */
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SCM_WRONG_TYPE_ARG (SCM_ARG1, val);
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}
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/* allocate new memory if necessary */
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if (data == NULL)
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if ((data = (CTYPE *) malloc (n * sizeof (CTYPE))) == NULL)
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return NULL;
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/* traverse the vector once more and convert each member */
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for (i = 0; i < n; i++)
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{
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val = SCM_VELTS (obj)[i];
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if (SCM_INUMP (val))
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data[i] = (CTYPE) SCM_INUM (val);
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else if (SCM_BIGP (val))
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data[i] = (CTYPE) scm_num2long (val, SCM_ARG1, FUNC_NAME);
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#if defined (FLOATTYPE)
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else
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data[i] = (CTYPE) SCM_REAL_VALUE (val);
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#endif
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}
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break;
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#if SCM_HAVE_ARRAYS
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/* array conversions (uniform vectors) */
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case ARRAYTYPE:
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#ifdef ARRAYTYPE_OPTIONAL
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case ARRAYTYPE_OPTIONAL:
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#endif
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n = SCM_UVECTOR_LENGTH (obj);
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/* allocate new memory if necessary */
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if (data == NULL)
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if ((data = (CTYPE *) malloc (n * sizeof (CTYPE))) == NULL)
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return NULL;
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#ifdef FLOATTYPE_OPTIONAL
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/* float <-> double conversions */
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if (SCM_TYP7 (obj) == ARRAYTYPE_OPTIONAL)
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{
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for (i = 0; i < n; i++)
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data[i] = ((FLOATTYPE_OPTIONAL *) SCM_UVECTOR_BASE (obj))[i];
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}
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else
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#endif
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#if SIZEOF_CTYPE != SIZEOF_ARRAYTYPE
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/* copy array element by element */
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for (i = 0; i < n; i++)
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data[i] = (CTYPE) ((ARRAYCTYPE *) SCM_UVECTOR_BASE (obj))[i];
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#else
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/* copy whole array */
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memcpy (data, (CTYPE *) SCM_UVECTOR_BASE (obj), n * sizeof (CTYPE));
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#endif
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break;
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#endif /* SCM_HAVE_ARRAYS */
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#if SIZEOF_CTYPE == 1
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case scm_tc7_string:
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n = SCM_STRING_LENGTH (obj);
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if (data == NULL)
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if ((data = (CTYPE *) malloc (n * sizeof (CTYPE))) == NULL)
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return NULL;
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memcpy (data, SCM_STRING_CHARS (obj), n * sizeof (CTYPE));
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break;
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#endif
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default:
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SCM_WRONG_TYPE_ARG (SCM_ARG1, obj);
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}
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return data;
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}
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#undef FUNC_NAME
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#if SCM_HAVE_ARRAYS
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/* Converts a C array into a uniform vector, returns SCM_UNDEFINED if out
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of memory. */
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#define FUNC_NAME CTYPES2UVECT_FN
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SCM
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CTYPES2UVECT (const CTYPE *data, long n)
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{
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#if SIZEOF_CTYPE != SIZEOF_UVECTTYPE
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UVECTCTYPE *v;
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long i;
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#else
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char *v;
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#endif
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SCM_ASSERT_RANGE (SCM_ARG2, scm_long2num (n),
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n > 0 && n <= SCM_UVECTOR_MAX_LENGTH);
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#if SIZEOF_CTYPE != SIZEOF_UVECTTYPE
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v = scm_gc_malloc (n * SIZEOF_UVECTTYPE, "uvect");
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for (i = 0; i < n; i++)
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v[i] = (UVECTCTYPE) data[i];
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#else
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v = scm_gc_malloc (n * sizeof (CTYPE), "uvect");
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memcpy (v, data, n * sizeof (CTYPE));
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#endif
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return scm_cell (SCM_MAKE_UVECTOR_TAG (n, UVECTTYPE), (scm_t_bits) v);
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}
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#undef FUNC_NAME
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#ifdef UVECTTYPE_OPTIONAL
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#define FUNC_NAME CTYPES2UVECT_FN_OPTIONAL
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SCM
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CTYPES2UVECT_OPTIONAL (const unsigned CTYPE *data, long n)
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{
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#if SIZEOF_CTYPE != SIZEOF_UVECTTYPE
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unsigned UVECTCTYPE *v;
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long i;
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#else
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char *v;
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#endif
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SCM_ASSERT_RANGE (SCM_ARG2, scm_long2num (n),
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n > 0 && n <= SCM_UVECTOR_MAX_LENGTH);
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#if SIZEOF_CTYPE != SIZEOF_UVECTTYPE
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v = scm_gc_malloc (n * SIZEOF_UVECTTYPE, "uvect");
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for (i = 0; i < n; i++)
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v[i] = (unsigned UVECTCTYPE) data[i];
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#else
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v = scm_gc_malloc (n * sizeof (CTYPE), "uvect");
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memcpy (v, data, n * sizeof (CTYPE));
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#endif
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return scm_cell (SCM_MAKE_UVECTOR_TAG (n, UVECTTYPE_OPTIONAL),
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(scm_t_bits) v);
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}
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#undef FUNC_NAME
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#endif /* UVECTTYPE_OPTIONAL */
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#endif /* SCM_HAVE_ARRAYS */
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/* Converts a C array into a vector. */
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#define FUNC_NAME CTYPES2SCM_FN
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SCM
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CTYPES2SCM (const CTYPE *data, long n)
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{
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long i;
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SCM v;
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SCM_ASSERT_RANGE (SCM_ARG2, scm_long2num (n),
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n > 0 && n <= SCM_VECTOR_MAX_LENGTH);
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v = scm_c_make_vector (n, SCM_UNSPECIFIED);
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for (i = 0; i < n; i++)
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#ifdef FLOATTYPE
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SCM_VECTOR_SET (v, i, scm_make_real ((double) data[i]));
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#else
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SCM_VECTOR_SET (v, i, SCM_MAKINUM (data[i]));
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#endif
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return v;
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}
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#undef FUNC_NAME
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/* cleanup of conditionals */
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#undef SCM2CTYPES
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#undef SCM2CTYPES_FN
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#undef CTYPES2SCM
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#undef CTYPES2SCM_FN
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#undef CTYPE
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#undef CTYPES2UVECT
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#undef CTYPES2UVECT_FN
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#undef UVECTTYPE
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#ifdef UVECTTYPE_OPTIONAL
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#undef CTYPES2UVECT_OPTIONAL
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#undef CTYPES2UVECT_FN_OPTIONAL
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#undef UVECTTYPE_OPTIONAL
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#endif
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#undef SIZEOF_CTYPE
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#undef SIZEOF_UVECTTYPE
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#undef SIZEOF_ARRAYTYPE
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#undef ARRAYTYPE
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#ifdef ARRAYTYPE_OPTIONAL
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#undef ARRAYTYPE_OPTIONAL
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#endif
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#ifdef FLOATTYPE
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#undef FLOATTYPE
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#endif
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#ifdef FLOATTYPE_OPTIONAL
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#undef FLOATTYPE_OPTIONAL
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#endif
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#ifdef UVECTCTYPE
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#undef UVECTCTYPE
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#endif
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#ifdef ARRAYCTYPE
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#undef ARRAYCTYPE
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#endif
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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