163 lines
20 KiB
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163 lines
20 KiB
HTML
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Copyright (C) 2021 Maxime Devos
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Copyright (C) 2024 Tomas Volf
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<title>SRFI-4 Extensions (Guile Reference Manual)</title>
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<div class="subsubsection-level-extent" id="SRFI_002d4-Extensions">
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Previous: <a href="SRFI_002d4-and-Bytevectors.html" accesskey="p" rel="prev">SRFI-4 - Relation to bytevectors</a>, Up: <a href="SRFI_002d4.html" accesskey="u" rel="up">SRFI-4 - Homogeneous numeric vector datatypes</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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<h4 class="subsubsection" id="SRFI_002d4-_002d-Guile-extensions"><span>7.5.5.4 SRFI-4 - Guile extensions<a class="copiable-link" href="#SRFI_002d4-_002d-Guile-extensions"> ¶</a></span></h4>
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<p>Guile defines some useful extensions to SRFI-4, which are not available in the
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default Guile environment. They may be imported by loading the extensions
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module:
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</p>
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<div class="example">
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<pre class="example-preformatted">(use-modules (srfi srfi-4 gnu))
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</pre></div>
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<dl class="first-deffn">
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<dt class="deffn" id="index-srfi_002d4_002dvector_002dtype_002dsize"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">srfi-4-vector-type-size</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-srfi_002d4_002dvector_002dtype_002dsize"> ¶</a></span></dt>
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<dd><p>Return the size, in bytes, of each element of SRFI-4 vector
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<var class="var">obj</var>. For example, <code class="code">(srfi-4-vector-type-size #u32())</code> returns
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<code class="code">4</code>.
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</p></dd></dl>
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<dl class="first-deffn">
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<dt class="deffn" id="index-any_002d_003eu8vector"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">any->u8vector</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-any_002d_003eu8vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-any_002d_003es8vector"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">any->s8vector</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-any_002d_003es8vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-any_002d_003eu16vector"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">any->u16vector</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-any_002d_003eu16vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-any_002d_003es16vector"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">any->s16vector</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-any_002d_003es16vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-any_002d_003eu32vector"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">any->u32vector</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-any_002d_003eu32vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-any_002d_003es32vector"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">any->s32vector</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-any_002d_003es32vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-any_002d_003eu64vector"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">any->u64vector</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-any_002d_003eu64vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-any_002d_003es64vector"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">any->s64vector</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-any_002d_003es64vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-any_002d_003ef32vector"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">any->f32vector</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-any_002d_003ef32vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-any_002d_003ef64vector"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">any->f64vector</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-any_002d_003ef64vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-any_002d_003ec32vector"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">any->c32vector</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-any_002d_003ec32vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-any_002d_003ec64vector"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">any->c64vector</strong> <var class="def-var-arguments">obj</var><a class="copiable-link" href="#index-any_002d_003ec64vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fany_005fto_005fu8vector"><span class="category-def">C Function: </span><span><strong class="def-name">scm_any_to_u8vector</strong> <var class="def-var-arguments">(obj)</var><a class="copiable-link" href="#index-scm_005fany_005fto_005fu8vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fany_005fto_005fs8vector"><span class="category-def">C Function: </span><span><strong class="def-name">scm_any_to_s8vector</strong> <var class="def-var-arguments">(obj)</var><a class="copiable-link" href="#index-scm_005fany_005fto_005fs8vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fany_005fto_005fu16vector"><span class="category-def">C Function: </span><span><strong class="def-name">scm_any_to_u16vector</strong> <var class="def-var-arguments">(obj)</var><a class="copiable-link" href="#index-scm_005fany_005fto_005fu16vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fany_005fto_005fs16vector"><span class="category-def">C Function: </span><span><strong class="def-name">scm_any_to_s16vector</strong> <var class="def-var-arguments">(obj)</var><a class="copiable-link" href="#index-scm_005fany_005fto_005fs16vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fany_005fto_005fu32vector"><span class="category-def">C Function: </span><span><strong class="def-name">scm_any_to_u32vector</strong> <var class="def-var-arguments">(obj)</var><a class="copiable-link" href="#index-scm_005fany_005fto_005fu32vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fany_005fto_005fs32vector"><span class="category-def">C Function: </span><span><strong class="def-name">scm_any_to_s32vector</strong> <var class="def-var-arguments">(obj)</var><a class="copiable-link" href="#index-scm_005fany_005fto_005fs32vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fany_005fto_005fu64vector"><span class="category-def">C Function: </span><span><strong class="def-name">scm_any_to_u64vector</strong> <var class="def-var-arguments">(obj)</var><a class="copiable-link" href="#index-scm_005fany_005fto_005fu64vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fany_005fto_005fs64vector"><span class="category-def">C Function: </span><span><strong class="def-name">scm_any_to_s64vector</strong> <var class="def-var-arguments">(obj)</var><a class="copiable-link" href="#index-scm_005fany_005fto_005fs64vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fany_005fto_005ff32vector"><span class="category-def">C Function: </span><span><strong class="def-name">scm_any_to_f32vector</strong> <var class="def-var-arguments">(obj)</var><a class="copiable-link" href="#index-scm_005fany_005fto_005ff32vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fany_005fto_005ff64vector"><span class="category-def">C Function: </span><span><strong class="def-name">scm_any_to_f64vector</strong> <var class="def-var-arguments">(obj)</var><a class="copiable-link" href="#index-scm_005fany_005fto_005ff64vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fany_005fto_005fc32vector"><span class="category-def">C Function: </span><span><strong class="def-name">scm_any_to_c32vector</strong> <var class="def-var-arguments">(obj)</var><a class="copiable-link" href="#index-scm_005fany_005fto_005fc32vector"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-scm_005fany_005fto_005fc64vector"><span class="category-def">C Function: </span><span><strong class="def-name">scm_any_to_c64vector</strong> <var class="def-var-arguments">(obj)</var><a class="copiable-link" href="#index-scm_005fany_005fto_005fc64vector"> ¶</a></span></dt>
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<dd><p>Return a (maybe newly allocated) uniform numeric vector of the indicated
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type, initialized with the elements of <var class="var">obj</var>, which must be a list,
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a vector, or a uniform vector. When <var class="var">obj</var> is already a suitable
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uniform numeric vector, it is returned unchanged.
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</p></dd></dl>
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<dl class="first-deffn">
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<dt class="deffn" id="index-u8vector_002dcopy_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">u8vector-copy!</strong> <var class="def-var-arguments">dst at src [start [end]]</var><a class="copiable-link" href="#index-u8vector_002dcopy_0021"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-s8vector_002dcopy_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">s8vector-copy!</strong> <var class="def-var-arguments">dst at src [start [end]]</var><a class="copiable-link" href="#index-s8vector_002dcopy_0021"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-u16vector_002dcopy_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">u16vector-copy!</strong> <var class="def-var-arguments">dst at src [start [end]]</var><a class="copiable-link" href="#index-u16vector_002dcopy_0021"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-s16vector_002dcopy_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">s16vector-copy!</strong> <var class="def-var-arguments">dst at src [start [end]]</var><a class="copiable-link" href="#index-s16vector_002dcopy_0021"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-u32vector_002dcopy_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">u32vector-copy!</strong> <var class="def-var-arguments">dst at src [start [end]]</var><a class="copiable-link" href="#index-u32vector_002dcopy_0021"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-s32vector_002dcopy_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">s32vector-copy!</strong> <var class="def-var-arguments">dst at src [start [end]]</var><a class="copiable-link" href="#index-s32vector_002dcopy_0021"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-u64vector_002dcopy_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">u64vector-copy!</strong> <var class="def-var-arguments">dst at src [start [end]]</var><a class="copiable-link" href="#index-u64vector_002dcopy_0021"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-s64vector_002dcopy_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">s64vector-copy!</strong> <var class="def-var-arguments">dst at src [start [end]]</var><a class="copiable-link" href="#index-s64vector_002dcopy_0021"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-f32vector_002dcopy_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">f32vector-copy!</strong> <var class="def-var-arguments">dst at src [start [end]]</var><a class="copiable-link" href="#index-f32vector_002dcopy_0021"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-f64vector_002dcopy_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">f64vector-copy!</strong> <var class="def-var-arguments">dst at src [start [end]]</var><a class="copiable-link" href="#index-f64vector_002dcopy_0021"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-c32vector_002dcopy_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">c32vector-copy!</strong> <var class="def-var-arguments">dst at src [start [end]]</var><a class="copiable-link" href="#index-c32vector_002dcopy_0021"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-c64vector_002dcopy_0021"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">c64vector-copy!</strong> <var class="def-var-arguments">dst at src [start [end]]</var><a class="copiable-link" href="#index-c64vector_002dcopy_0021"> ¶</a></span></dt>
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<dd><p>Copy a block of elements from <var class="var">src</var> to <var class="var">dst</var>, both of which must
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be vectors of the indicated type, starting in <var class="var">dst</var> at <var class="var">at</var> and
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starting in <var class="var">src</var> at <var class="var">start</var> and ending at <var class="var">end</var>. It is an
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error for <var class="var">dst</var> to have a length less than <var class="var">at</var> + (<var class="var">end</var> -
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<var class="var">start</var>). <var class="var">at</var> and <var class="var">start</var> default to 0 and <var class="var">end</var>
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defaults to the length of <var class="var">src</var>.
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</p>
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<p>If source and destination overlap, copying takes place as if the
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source is first copied into a temporary vector and then into the
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destination.
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</p>
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<p>See also <a class="ref" href="Vector-Accessors.html#x_002dvector_002dcopy_0021"><code class="code">vector-copy!</code></a>.
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</p></dd></dl>
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<dl class="first-deffn">
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<dt class="deffn" id="index-u8vector_002dcopy"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">u8vector-copy</strong> <var class="def-var-arguments">src [start [end]]</var><a class="copiable-link" href="#index-u8vector_002dcopy"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-s8vector_002dcopy"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">s8vector-copy</strong> <var class="def-var-arguments">src [start [end]]</var><a class="copiable-link" href="#index-s8vector_002dcopy"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-u16vector_002dcopy"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">u16vector-copy</strong> <var class="def-var-arguments">src [start [end]]</var><a class="copiable-link" href="#index-u16vector_002dcopy"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-s16vector_002dcopy"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">s16vector-copy</strong> <var class="def-var-arguments">src [start [end]]</var><a class="copiable-link" href="#index-s16vector_002dcopy"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-u32vector_002dcopy"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">u32vector-copy</strong> <var class="def-var-arguments">src [start [end]]</var><a class="copiable-link" href="#index-u32vector_002dcopy"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-s32vector_002dcopy"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">s32vector-copy</strong> <var class="def-var-arguments">src [start [end]]</var><a class="copiable-link" href="#index-s32vector_002dcopy"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-u64vector_002dcopy"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">u64vector-copy</strong> <var class="def-var-arguments">src [start [end]]</var><a class="copiable-link" href="#index-u64vector_002dcopy"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-s64vector_002dcopy"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">s64vector-copy</strong> <var class="def-var-arguments">src [start [end]]</var><a class="copiable-link" href="#index-s64vector_002dcopy"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-f32vector_002dcopy"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">f32vector-copy</strong> <var class="def-var-arguments">src [start [end]]</var><a class="copiable-link" href="#index-f32vector_002dcopy"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-f64vector_002dcopy"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">f64vector-copy</strong> <var class="def-var-arguments">src [start [end]]</var><a class="copiable-link" href="#index-f64vector_002dcopy"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-c32vector_002dcopy"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">c32vector-copy</strong> <var class="def-var-arguments">src [start [end]]</var><a class="copiable-link" href="#index-c32vector_002dcopy"> ¶</a></span></dt>
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<dt class="deffnx def-cmd-deffn" id="index-c64vector_002dcopy"><span class="category-def">Scheme Procedure: </span><span><strong class="def-name">c64vector-copy</strong> <var class="def-var-arguments">src [start [end]]</var><a class="copiable-link" href="#index-c64vector_002dcopy"> ¶</a></span></dt>
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<dd><p>Returns a freshly allocated vector of the indicated type, which must be
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the same as that of <var class="var">src</var>, containing the elements of <var class="var">src</var>
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between <var class="var">start</var> and <var class="var">end</var>. <var class="var">start</var> defaults to 0 and
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<var class="var">end</var> defaults to the length of <var class="var">src</var>.
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</p>
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<p>See also <a class="ref" href="Vector-Accessors.html#x_002dvector_002dcopy"><code class="code">vector-copy</code></a>.
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</p></dd></dl>
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</div>
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<hr>
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