57 lines
4.5 KiB
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57 lines
4.5 KiB
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<TITLE>CLHS: Function UPGRADED-COMPLEX-PART-TYPE</TITLE>
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<A NAME="upgraded-complex-part-type"><I>Function</I> <B>UPGRADED-COMPLEX-PART-TYPE</B></A> <P>
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<P><B>Syntax:</B><P>
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<B>upgraded-complex-part-type</B> <I>typespec <TT>&optional</TT> environment</I> => <I>upgraded-typespec</I><P>
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<P>
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<P><B>Arguments and Values:</B><P>
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<P>
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<I>typespec</I>---a <A REL=DEFINITION HREF="26_glo_t.htm#type_specifier"><I>type specifier</I></A>. <P>
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<I>environment</I>---an <A REL=DEFINITION HREF="26_glo_e.htm#environment"><I>environment</I></A> <A REL=DEFINITION HREF="26_glo_o.htm#object"><I>object</I></A>. The default is <A REL=DEFINITION HREF="a_nil.htm#nil"><B>nil</B></A>, denoting the <A REL=DEFINITION HREF="26_glo_n.htm#null_lexical_environment"><I>null lexical environment</I></A> and the and current <A REL=DEFINITION HREF="26_glo_g.htm#global_environment"><I>global environment</I></A>. <P>
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<I>upgraded-typespec</I>---a <A REL=DEFINITION HREF="26_glo_t.htm#type_specifier"><I>type specifier</I></A>. <P>
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<P><B>Description:</B><P>
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<P>
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<A REL=DEFINITION HREF="#upgraded-complex-part-type"><B>upgraded-complex-part-type</B></A> returns the part type of the most specialized <A REL=DEFINITION HREF="26_glo_c.htm#complex"><I>complex</I></A> number representation that can hold parts of <A REL=DEFINITION HREF="26_glo_t.htm#type"><I>type</I></A> <I>typespec</I>. <P>
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The <I>typespec</I> is a <A REL=DEFINITION HREF="26_glo_s.htm#subtype"><I>subtype</I></A> of (and possibly <A REL=DEFINITION HREF="26_glo_t.htm#type_equivalent"><I>type equivalent</I></A> to) the <I>upgraded-typespec</I>. <P>
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The purpose of <A REL=DEFINITION HREF="#upgraded-complex-part-type"><B>upgraded-complex-part-type</B></A> is to reveal how an implementation does its <I>upgrading</I>. <P>
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<P><B>Examples:</B> None.
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<P>
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<P><B>Side Effects:</B> None.
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<P>
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<P><B>Affected By:</B> None.
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<P>
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<P><B>Exceptional Situations:</B> None.
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<P>
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<P><B>See Also:</B><P>
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<P>
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<A REL=DEFINITION HREF="f_comp_2.htm#complex"><B>complex</B></A> (<A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A> and <A REL=DEFINITION HREF="26_glo_t.htm#type"><I>type</I></A>) <P>
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<P><B>Notes:</B><P>
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<P>
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<P><HR>The following <A REL=META HREF="../Front/X3J13Iss.htm">X3J13 cleanup issues</A>, <I>not part of the specification</I>, apply to this section:<P><UL><LI> <A REL=CHILD HREF="../Issues/iss015.htm">ARRAY-TYPE-ELEMENT-TYPE-SEMANTICS:UNIFY-UPGRADING</A><LI> <A REL=CHILD HREF="../Issues/iss334.htm">SUBTYPEP-ENVIRONMENT:ADD-ARG</A><P></UL><HR>
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