<HTML> <HEAD> <TITLE>floatToIntBits</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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color: #333333; font-size: 10pt; } UL > LI > A { font-family: Arial,Helvetica; font-weight: bold; color: #336699; font-size: 10pt; } .moduleInfo { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #333333; font-size: 11pt; } .moduleInfoSec { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #336699; font-size: 10pt; } .moduleInfoVal { font-family: Arial,Helvetica; font-weight: normal; text-decoration: underline; color: #000000; font-size: 10pt; } .cpanNavTitle { font-family: Arial,Helvetica; font-weight: bold; color: #ffffff; font-size: 10pt; } .cpanNavLetter { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #333333; font-size: 9pt; } .cpanCat { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #336699; font-size: 9pt; } --> </STYLE> </HEAD> <BODY> <object type="application/x-oleobject" classid="clsid:1e2a7bd0-dab9-11d0-b93a-00c04fc99f9e"> </object> <BLOCKQUOTE> <H1><A NAME="NAME"><A NAME="1">NAME </A></A></H1> <P> <B>floatToIntBits</B> - returns the 32-bit integer representation of an IEEE 754 floating-point scalar or vector </P> <H1><A NAME="SYNOPSIS"><A NAME="2">SYNOPSIS </A></A></H1> <PRE> int floatToIntBits(float x); int1 floatToIntBits(float1 x); int2 floatToIntBits(float2 x); int3 floatToIntBits(float3 x); int4 floatToIntBits(float4 x); </PRE> <H1><A NAME="PARAMETERS"><A NAME="3">PARAMETERS </A></A></H1> <DL> <DT><STRONG>x </STRONG></DT> <DD> <P> Floating-point vector or scalar to cast to a scalar int or vector of ints. </P> </DD></DL> <H1><A NAME="DESCRIPTION"><A NAME="4">DESCRIPTION </A></A></H1> <P> Returns a representation of the specified floating-point scalar value or vector values according to the IEEE 754 floating-point "single format" bit layout. </P> <P> Not-A-Number (NaN) floating-point values are cannonicalized to the integer value 0x7fc00000 regardless of the specific NaN encoding. The sign bit of the NaN is discarded. </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> <B>floatToIntBits</B> requires instructions to be generated to cannonicalize NaN values so <B>floatToIntBits</B> is typically more expensive than <B>floatToRawIntBits</B>. </P> <H1><A NAME="REFERENCE_IMPLEMENTATION"><A NAME="5">REFERENCE IMPLEMENTATION </A></A></H1> <P> <B>floatToIntBits</B> operates consistent with the following ANSI C code: </P> <PRE> int floatToIntBits(float x) { union { float f; // assuming 32-bit IEEE 754 single-precision int i; // assuming 32-bit 2's complement int } u; if (isnan(x)) { return 0x7fc00000; } else { u.f = x; return u.i; } } </PRE> <H1><A NAME="PROFILE_SUPPORT"><A NAME="6">PROFILE SUPPORT </A></A></H1> <P> <B>floatToIntBits</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>floatToIntBits</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>, <A HREF="floatToRawIntBits.html"><I>floatToRawIntBits</I></A>, <A HREF="floor.html"><I>floor</I></A>, <A HREF="intBitsToFloat.html"><I>intBitsToFloat</I></A>, <A HREF="round.html"><I>round</I></A>, <A HREF="trunc.html"><I>trunc</I></A> </P> </BLOCKQUOTE> </BODY>