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/* this file is #include'd (x times) by convert.c */
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/* You need to define the following macros before including this
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template. They are undefined at the end of this file to give a
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clean slate for the next inclusion.
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The type of an element of the C array, for example 'char'.
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The function that converts a CTYPE to a SCM, for example
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The tag of a suitable uniform vector that can hold the CTYPE, for
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The C type of an element of the uniform vector, for example
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The name of the 'SCM-to-C' function, for example scm_c_scm2chars.
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The name of the 'C-to-SCM' function, for example, scm_c_chars2scm.
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The name of the 'C-to-uniform-vector' function, for example
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scm_c_chars2byvect. It will create a uniform vector of kind
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The name of a second 'C-to-uniform-vector' function. Leave
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undefined if you want only one such function.
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The tag and C type of the second kind of uniform vector, for use
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with the function described above.
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/* The first level does not expand macros in the arguments. */
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#define paste(a1,a2,a3) a1##a2##a3
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#define stringify(a) #a
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/* But the second level does. */
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#define F(pre,T,suf) paste(pre,T,suf)
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#define S(T) stringify(T)
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/* Convert a vector, list or uniform vector into a C array. If the
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result array in argument 2 is NULL, malloc() a new one.
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SCM2CTYPES (SCM obj, CTYPE *data)
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scm_t_array_handle handle;
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const UVEC_CTYPE *uvec_elements;
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obj = F(scm_any_to_,UVEC_TAG,vector) (obj);
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uvec_elements = F(scm_,UVEC_TAG,vector_elements) (obj, &handle, &len, &inc);
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data = scm_malloc (len * sizeof (CTYPE));
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for (i = 0; i < len; i++, uvec_elements += inc)
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data[i] = uvec_elements[i];
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scm_array_handle_release (&handle);
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/* Converts a C array into a vector. */
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CTYPES2SCM (const CTYPE *data, long n)
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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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SCM_SIMPLE_VECTOR_SET (v, i, FROM_CTYPE (data[i]));
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/* Converts a C array into a uniform vector. */
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CTYPES2UVECT (const CTYPE *data, long n)
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scm_t_array_handle handle;
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UVEC_CTYPE *uvec_elements;
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uvec = F(scm_make_,UVEC_TAG,vector) (scm_from_long (n), SCM_UNDEFINED);
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uvec_elements = F(scm_,UVEC_TAG,vector_writable_elements) (uvec, &handle,
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for (i = 0; i < n; i++)
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uvec_elements[i] = data[i];
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scm_array_handle_release (&handle);
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CTYPES2UVECT_2 (const CTYPE_2 *data, long n)
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scm_t_array_handle handle;
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UVEC_CTYPE_2 *uvec_elements;
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uvec = F(scm_make_,UVEC_TAG_2,vector) (scm_from_long (n), SCM_UNDEFINED);
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uvec_elements = F(scm_,UVEC_TAG_2,vector_writable_elements) (uvec, &handle,
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for (i = 0; i < n; i++)
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uvec_elements[i] = data[i];
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scm_array_handle_release (&handle);
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#ifdef CTYPES2UVECT_2
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#undef CTYPES2UVECT_2
added
removed
libguile/convert.i.c
