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<title>NVIDIA(R) PhysX(R) SDK 3.4 API Reference: PxMath.h File Reference</title>
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<h1>PxMath.h File Reference</h1><code>#include "<a class="el" href="PxPreprocessor_8h-source.html">foundation/PxPreprocessor.h</a>"</code><br>
<code>#include <math.h></code><br>
<code>#include <float.h></code><br>
<code>#include "<a class="el" href="PxIntrinsics_8h-source.html">foundation/PxIntrinsics.h</a>"</code><br>
<code>#include "<a class="el" href="PxAssert_8h-source.html">foundation/PxAssert.h</a>"</code><br>
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Include dependency graph for PxMath.h:</div>
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<a href="PxMath_8h-source.html">Go to the source code of this file.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T > </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE PX_FORCE_INLINE T </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group__foundation.html#g88c618b0512d00a0571e52a7d2a73516">PxMax</a> (T a, T b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The return value is the greater of the two specified values. <a href="group__foundation.html#g88c618b0512d00a0571e52a7d2a73516"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group__foundation.html#g026c005ccf0e10cc78e9e285809491d2">PxMax</a> (float a, float b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">overload for float to use fsel on xbox <a href="group__foundation.html#g026c005ccf0e10cc78e9e285809491d2"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T > </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE PX_FORCE_INLINE T </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group__foundation.html#g1bf6a07efe8c7593ff6a4b6eeedeae4d">PxMin</a> (T a, T b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The return value is the lesser of the two specified values. <a href="group__foundation.html#g1bf6a07efe8c7593ff6a4b6eeedeae4d"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group__foundation.html#g03bc85cfd03803b1d4c0a69a95b3c0c6">PxMin</a> (float a, float b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">overload for float to use fsel on xbox <a href="group__foundation.html#g03bc85cfd03803b1d4c0a69a95b3c0c6"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gf72e1dce9e874da7b92cbc0ea5e4e30d">PxAbs</a> (float a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">abs returns the absolute value of its argument. <a href="group__foundation.html#gf72e1dce9e874da7b92cbc0ea5e4e30d"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gbb5e8a2eee08bb16174c87dedbe49498">PxEquals</a> (float a, float b, float eps)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g50d4d7247809d26270bd731bdc394793">PxAbs</a> (double a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">abs returns the absolute value of its argument. <a href="group__foundation.html#g50d4d7247809d26270bd731bdc394793"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gdf64a1111c7dfd07290aed0cf3277098">PxAbs</a> (int32_t a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">abs returns the absolute value of its argument. <a href="group__foundation.html#gdf64a1111c7dfd07290aed0cf3277098"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T > </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE PX_FORCE_INLINE T </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group__foundation.html#g35874bb9e60edb742a0c07abd5713a0c">PxClamp</a> (T v, T lo, T hi)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Clamps v to the range [hi,lo]. <a href="group__foundation.html#g35874bb9e60edb742a0c07abd5713a0c"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g11d5e4e77acad728886b380b5f3806f0">PxSqrt</a> (float a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Square root. <a href="group__foundation.html#g11d5e4e77acad728886b380b5f3806f0"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g23fec839e8daf10494d43640dca49e09">PxSqrt</a> (double a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Square root. <a href="group__foundation.html#g23fec839e8daf10494d43640dca49e09"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gcd945627f345ba03e83a30387ab99dea">PxRecipSqrt</a> (float a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">reciprocal square root. <a href="group__foundation.html#gcd945627f345ba03e83a30387ab99dea"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g2e96f326a9b29ecb2cbe00f2f7662cf0">PxRecipSqrt</a> (double a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">reciprocal square root. <a href="group__foundation.html#g2e96f326a9b29ecb2cbe00f2f7662cf0"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g98f571cc01fc3aa0e73e215c27ab8069">PxSin</a> (float a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">trigonometry -- all angles are in radians. <a href="group__foundation.html#g98f571cc01fc3aa0e73e215c27ab8069"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g56576468182972ec8511c7dd20f47a4d">PxSin</a> (double a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sine of an angle ( <b>Unit:</b> Radians ). <a href="group__foundation.html#g56576468182972ec8511c7dd20f47a4d"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gcc501523ad3ab46c5a061c4442d10fcf">PxCos</a> (float a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Cosine of an angle (<b>Unit:</b> Radians). <a href="group__foundation.html#gcc501523ad3ab46c5a061c4442d10fcf"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g903d59eeddf0328e54f1caf8efddf2fc">PxCos</a> (double a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Cosine of an angle (<b>Unit:</b> Radians). <a href="group__foundation.html#g903d59eeddf0328e54f1caf8efddf2fc"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g7b8deaee36a7d45581d4706ae6c9905b">PxTan</a> (float a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Tangent of an angle. <b>Unit:</b> Radians. <a href="group__foundation.html#g7b8deaee36a7d45581d4706ae6c9905b"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g3ad36c60750fd7773dd217aa681ee0d1">PxTan</a> (double a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Tangent of an angle. <b>Unit:</b> Radians. <a href="group__foundation.html#g3ad36c60750fd7773dd217aa681ee0d1"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g437cafb349b7bc7d1d912ab27392bfe9">PxAsin</a> (float f)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Arcsine. Returns angle between -PI/2 and PI/2 in radians <b>Unit:</b> Radians. <a href="group__foundation.html#g437cafb349b7bc7d1d912ab27392bfe9"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gb6253e62a4ebc9be4560c54756aea29a">PxAsin</a> (double f)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Arcsine. Returns angle between -PI/2 and PI/2 in radians <b>Unit:</b> Radians. <a href="group__foundation.html#gb6253e62a4ebc9be4560c54756aea29a"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g0953977efc7599071aefadc35e842f97">PxAcos</a> (float f)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Arccosine. Returns angle between 0 and PI in radians <b>Unit:</b> Radians. <a href="group__foundation.html#g0953977efc7599071aefadc35e842f97"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gfed20db31b2806b91c6b6745bac2f9ae">PxAcos</a> (double f)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Arccosine. Returns angle between 0 and PI in radians <b>Unit:</b> Radians. <a href="group__foundation.html#gfed20db31b2806b91c6b6745bac2f9ae"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gea3adf6a4e304f82c6646618ad633bd2">PxAtan</a> (float a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">ArcTangent. Returns angle between -PI/2 and PI/2 in radians <b>Unit:</b> Radians. <a href="group__foundation.html#gea3adf6a4e304f82c6646618ad633bd2"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g9cf210fa59d59f641438771f3c24102f">PxAtan</a> (double a)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">ArcTangent. Returns angle between -PI/2 and PI/2 in radians <b>Unit:</b> Radians. <a href="group__foundation.html#g9cf210fa59d59f641438771f3c24102f"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g3b820cf45fee058a4083d955daa02154">PxAtan2</a> (float x, float y)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Arctangent of (x/y) with correct sign. Returns angle between -PI and PI in radians <b>Unit:</b> Radians. <a href="group__foundation.html#g3b820cf45fee058a4083d955daa02154"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE double </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gddaa9e455c2d0ae28111358f6c426056">PxAtan2</a> (double x, double y)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Arctangent of (x/y) with correct sign. Returns angle between -PI and PI in radians <b>Unit:</b> Radians. <a href="group__foundation.html#gddaa9e455c2d0ae28111358f6c426056"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gd6de0f4af98c5c5280b8fe695dc87318">PxIsFinite</a> (float f)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">returns true if the passed number is a finite floating point number as opposed to INF, NAN, etc. <a href="group__foundation.html#gd6de0f4af98c5c5280b8fe695dc87318"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE bool </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#ga689e47bbd54cfc6a4a1ce5bc7f1a2f6">PxIsFinite</a> (double f)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">returns true if the passed number is a finite floating point number as opposed to INF, NAN, etc. <a href="group__foundation.html#ga689e47bbd54cfc6a4a1ce5bc7f1a2f6"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#ge0a6cff0842c2d8b1b78656bcd680e1c">PxFloor</a> (float a)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gf478a0d9ce3c6ec717d8fc74684f6cee">PxExp</a> (float a)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g9c45606642752cb98a361b359482c476">PxCeil</a> (float a)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g250e461f84db027c14d3f1e33b8adc9c">PxSign</a> (float a)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#ge34aa1b4d7a85dbe98e9ed2df79c17a0">PxPow</a> (float x, float y)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">PX_CUDA_CALLABLE <br class="typebreak">
PX_FORCE_INLINE float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#ge43dc1649f209f1142a57cf14b200ad2">PxLog</a> (float x)</td></tr>
<tr><td colspan="2"><br><h2>Variables</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static const float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gbcd49a429b8119de54375b3538ae8a8d">PxPi</a> = float(3.141592653589793)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static const float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g17a46314a8577460d3840466cb12a331">PxHalfPi</a> = float(1.57079632679489661923)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static const float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#g3773ce018f51c7f8f2c061faab2d411b">PxTwoPi</a> = float(6.28318530717958647692)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static const float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gd5970e1d62cfec4e6872517638e7ee61">PxInvPi</a> = float(0.31830988618379067154)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static const float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gee8f7127123da8f1a6aba82ee0bab638">PxInvTwoPi</a> = float(0.15915494309189533577)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static const float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gadbc7232bb8117014d359b6e63967170">PxPiDivTwo</a> = float(1.57079632679489661923)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static const float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__foundation.html#gcb4cd96e4188d5cc377ab184d5eef081">PxPiDivFour</a> = float(0.78539816339744830962)</td></tr>
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