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34 lines
1.1 KiB
34 lines
1.1 KiB
=proto
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int duk_to_int32(duk_context *ctx, int index);
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=stack
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[ ... val! ... ] -> [ ... ToInt32(val)! ... ]
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=summary
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<p>Replace the value at <tt>index</tt> with an Ecmascript
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<a href="http://www.ecma-international.org/ecma-262/5.1/#sec-9.5">ToInt32()</a>
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coerced value. Returns the coerced value. If <tt>index</tt> is invalid, throws
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an error.</p>
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<p>Custom type coercion:</p>
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<ul>
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<li>Buffer: <tt>0</tt> for zero-size buffer, <tt>1</tt> otherwise</li>
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<li>Pointer: <tt>0</tt> for <tt>NULL</tt> pointer, <tt>1</tt> otherwise</li>
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</ul>
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<div class="note">
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The result of <tt>ToInt32()</tt> is a signed 32-bit integer and is assumed to
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fit into the C <tt>int</tt> type. If the C type is smaller, the value will be
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coerced by the C compiler (<tt>double</tt> to <tt>int</tt>).
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</div>
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=example
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printf("ToInt32(): %d\n", duk_to_int32(ctx, -3));
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=tags
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stack
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=fixme
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Apply the duk_get_int() coercion to the result just in case? It would clamp
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output values to INT_MIN and INT_MAX. This is not very relevant because if
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int is smaller than 32 bits, everything will break anyway.
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