<HTML> <HEAD> <TITLE>sincos</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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void sincos(float1 a, out float1 s, out float1 c); void sincos(float2 a, out float2 s, out float2 c); void sincos(float3 a, out float3 s, out float3 c); void sincos(float4 a, out float4 s, out float4 c); void sincos(half a, out half s, out half c); void sincos(half1 a, out half1 s, out half1 c); void sincos(half2 a, out half2 s, out half2 c); void sincos(half3 a, out half3 s, out half3 c); void sincos(half4 a, out half4 s, out half4 c); void sincos(fixed a, out fixed s, out fixed c); void sincos(fixed1 a, out fixed1 s, out fixed1 c); void sincos(fixed2 a, out fixed2 s, out fixed2 c); void sincos(fixed3 a, out fixed3 s, out fixed3 c); void sincos(fixed4 a, out fixed4 s, out fixed4 c); </PRE> <H1><A NAME="PARAMETERS"><A NAME="3">PARAMETERS </A></A></H1> <DL> <DT><STRONG>a </STRONG></DT> <DD> <P> Input vector or scalar of which to determine the sine and cosine. </P> <DT><STRONG>s </STRONG></DT> <DD> <P> Ouput vector or scalar for sine results. </P> <DT><STRONG>c </STRONG></DT> <DD> <P> Ouput vector or scalar for cosine results. </P> </DD></DL> <H1><A NAME="DESCRIPTION"><A NAME="4">DESCRIPTION </A></A></H1> <P> Outputs to <I>s</I> the sine of <I>a</I> in radians, and outputs to <I>c</I> the cosine of <I>a</I> in radians. The output values are in the range [-1,+1]. </P> <P> For vectors, the output vectors contains the sine or cosine respectively of each element of the input vector. </P> <H1><A NAME="REFERENCE_IMPLEMENTATION"><A NAME="5">REFERENCE IMPLEMENTATION </A></A></H1> <P> <B>sin</B> is best implemented as a native sine instruction, however <B>sin</B> for a <B>float</B> scalar could be implemented by an approximation like this. </P> <PRE> void sincos(float3 a, out float3 s, float3 out c) { int i; for (i=0; i<3; i++) { s[i] = sin(a[i]); c[i] = cos(a[i]); } } </PRE> <H1><A NAME="PROFILE_SUPPORT"><A NAME="6">PROFILE SUPPORT </A></A></H1> <P> <B>sincos</B> is fully supported in all profiles unless otherwise specified. </P> <P> <B>sincos</B> is supported via an approximation (shown above) in the <A HREF="vs_1_1.html">vs_1_1</A>, <A HREF="vp20.html">vp20</A>, and <A HREF="arbvp1.html">arbvp1</A> profiles. </P> <P> <B>sincos</B> is unsupported in the <A HREF="fp20.html">fp20</A>, <A HREF="ps_1_1.html">ps_1_1</A>, <A HREF="ps_1_2.html">ps_1_2</A>, and <A HREF="ps_1_3.html">ps_1_3</A> profiles. </P> <H1><A NAME="SEE_ALSO"><A NAME="7">SEE ALSO </A></A></H1> <P> <A HREF="cos.html"><I>cos</I></A>, <A HREF="sin.html"><I>sin</I></A> </P> </BLOCKQUOTE> </BODY>