<HTML> <HEAD> <TITLE>intBitsToFloat</TITLE> <STYLE TYPE="text/css" MEDIA=screen> <!-- BODY { font-family: Arial,Helvetica; } BLOCKQUOTE { margin: 10pt; } H1,A { color: #336699; } /*** Top menu style ****/ .mmenuon { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #ff6600; font-size: 10pt; } .mmenuoff { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #ffffff; font-size: 10pt; } .cpyright { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #ffffff; font-size: xx-small; } .cpyrightText { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #ffffff; font-size: xx-small; } .sections { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #336699; font-size: 11pt; } .dsections { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #336699; font-size: 12pt; } .slink { font-family: Arial,Helvetica; font-weight: normal; text-decoration: none; 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float1 intBitsToFloat(int1 x); float2 intBitsToFloat(int2 x); float3 intBitsToFloat(int3 x); float4 intBitsToFloat(int4 x); </PRE> <H1><A NAME="PARAMETERS"><A NAME="3">PARAMETERS </A></A></H1> <DL> <DT><STRONG>x </STRONG></DT> <DD> <P> Integer vector or scalar to raw cast to a scalar float or vector of floats </P> </DD></DL> <H1><A NAME="DESCRIPTION"><A NAME="4">DESCRIPTION </A></A></H1> <P> Returns the IEEE 754 float scalar value or vector values corresponding to a given 32-bit integer bit represention for a scalar int value or vector of int values. </P> <P> This function is based on Java's jave.lang.Float method of the same name. See: </P> <PRE> <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Float.html">java.sun.com/j2se/1.4.2/docs/api/java/lang/Float.html</A> </PRE><P> The Cg compiler can typically optimize <B>intBitsToFloat</B> so it has no instruction cost. </P> <H1><A NAME="REFERENCE_IMPLEMENTATION"><A NAME="5">REFERENCE IMPLEMENTATION </A></A></H1> <P> <B>intBitsToFloat</B> operates consistent with the following ANSI C code: </P> <PRE> float floatToRawIntBits(int x) { union { float f; // assuming 32-bit IEEE 754 single-precision int i; // assuming 32-bit 2's complement int } u; u.i = x; return u.f; } </PRE> <H1><A NAME="PROFILE_SUPPORT"><A NAME="6">PROFILE SUPPORT </A></A></H1> <P> <B>intBitsToFloat</B> is supported by the <A HREF="gp4vp.html"><I>gp4vp</I></A>, <A HREF="gp4gp.html"><I>gp4gp</I></A>, and <A HREF="gp4vp.html"><I>gp4vp</I></A> profiles. </P> <P> <B>intBitsToFloat</B> is <I>not</I> supported by pre-G80 profiles. </P> <H1><A NAME="SEE_ALSO"><A NAME="7">SEE ALSO </A></A></H1> <P> <A HREF="ceil.html"><I>ceil</I></A>, <I>floatToIntBits</I>, <A HREF="floatToRawIntBits.html"><I>floatToRawIntBits</I></A>, <A HREF="floor.html"><I>floor</I></A>, <A HREF="round.html"><I>round</I></A>, <A HREF="trunc.html"><I>trunc</I></A> </P> </BLOCKQUOTE> </BODY>