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<div class="category"><a href="index.html" title="CUDA Math API">CUDA Math API</a></div>
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<div class="section-link"><a href="modules.html#modules">1. Modules</a></div>
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<div class="section-link"><a href="group__CUDA__MATH.html#group__CUDA__MATH">1.1. Mathematical Functions</a></div>
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<div class="section-link"><a href="group__CUDA__MATH__SINGLE.html#group__CUDA__MATH__SINGLE">1.2. Single Precision Mathematical Functions</a></div>
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<div class="section-link"><a href="group__CUDA__MATH__DOUBLE.html#group__CUDA__MATH__DOUBLE">1.3. Double Precision Mathematical Functions</a></div>
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<div class="section-link"><a href="group__CUDA__MATH__INTRINSIC__SINGLE.html#group__CUDA__MATH__INTRINSIC__SINGLE">1.4. Single Precision Intrinsics</a></div>
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<div class="section-link"><a href="group__CUDA__MATH__INTRINSIC__DOUBLE.html#group__CUDA__MATH__INTRINSIC__DOUBLE">1.5. Double Precision Intrinsics</a></div>
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<div class="section-link"><a href="group__CUDA__MATH__INTRINSIC__INT.html#group__CUDA__MATH__INTRINSIC__INT">1.6. Integer Intrinsics</a></div>
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<div class="section-link"><a href="group__CUDA__MATH__INTRINSIC__CAST.html#group__CUDA__MATH__INTRINSIC__CAST">1.7. Type Casting Intrinsics</a></div>
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<div class="section-link"><a href="group__CUDA__MATH__INTRINSIC__SIMD.html#group__CUDA__MATH__INTRINSIC__SIMD">1.8. SIMD Intrinsics</a></div>
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<div class="topic reference apiRef apiPackage cppModule" id="group__CUDA__MATH__INTRINSIC__INT"><a name="group__CUDA__MATH__INTRINSIC__INT" shape="rect">
<!-- --></a><h2 class="topictitle2 cppModule">1.6. Integer Intrinsics</h2>
<div class="section">
<p>This section describes integer intrinsic functions that are only supported in device code. </p>
</div>
<h3 class="fake_sectiontitle member_header">Functions</h3>
<dl class="members">
<dt><span class="member_long_type"><span class="keyword keyword apiItemName">__device__</span>
unsigned int </span><span class="member_name_long_type"><a href="#group__CUDA__MATH__INTRINSIC__INT_1gc84ef1115946870edbcebddc0d539c5a" shape="rect">__brev</a> ( unsigned int <span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Reverse the bit order of a 32 bit unsigned integer. </span></dd>
<dt><span class="member_long_type"><span class="keyword keyword apiItemName">__device__</span>
unsigned long long int </span><span class="member_name_long_type"><a href="#group__CUDA__MATH__INTRINSIC__INT_1g554354459699a11acfb072cf536974cd" shape="rect">__brevll</a> ( unsigned long long int<span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Reverse the bit order of a 64 bit unsigned integer. </span></dd>
<dt><span class="member_long_type"><span class="keyword keyword apiItemName">__device__</span>
unsigned int </span><span class="member_name_long_type"><a href="#group__CUDA__MATH__INTRINSIC__INT_1g0b8b8156fe619205bf8d65acd8f29131" shape="rect">__byte_perm</a> ( unsigned int <span> </span><span class="keyword keyword apiItemName">x</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">y</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">s</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Return selected bytes from two 32 bit unsigned integers. </span></dd>
<dt><span class="member_type"><span class="keyword keyword apiItemName">__device__</span>
int </span><span class="member_name"><a href="#group__CUDA__MATH__INTRINSIC__INT_1gd45548f57952ed410fa5d824984f16d0" shape="rect">__clz</a> ( int <span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Return the number of consecutive high-order zero bits in a 32 bit integer. </span></dd>
<dt><span class="member_type"><span class="keyword keyword apiItemName">__device__</span>
int </span><span class="member_name"><a href="#group__CUDA__MATH__INTRINSIC__INT_1g88ff76484edc65cafbef80e71a1daa53" shape="rect">__clzll</a> ( long long int<span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Count the number of consecutive high-order zero bits in a 64 bit integer. </span></dd>
<dt><span class="member_type"><span class="keyword keyword apiItemName">__device__</span>
int </span><span class="member_name"><a href="#group__CUDA__MATH__INTRINSIC__INT_1gaf1eb22243e29e0b7222adee8ae7d4e4" shape="rect">__ffs</a> ( int <span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Find the position of the least significant bit set to 1 in a 32 bit integer. </span></dd>
<dt><span class="member_type"><span class="keyword keyword apiItemName">__device__</span>
int </span><span class="member_name"><a href="#group__CUDA__MATH__INTRINSIC__INT_1gc42b0f1b68e9db038015d40a18d305df" shape="rect">__ffsll</a> ( long long int<span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Find the position of the least significant bit set to 1 in a 64 bit integer. </span></dd>
<dt><span class="member_type"><span class="keyword keyword apiItemName">__device__</span>
int </span><span class="member_name"><a href="#group__CUDA__MATH__INTRINSIC__INT_1g6acbd5fd1fef78022471b58852e495da" shape="rect">__hadd</a> ( int , int ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Compute average of signed input arguments, avoiding overflow in the intermediate sum. </span></dd>
<dt><span class="member_type"><span class="keyword keyword apiItemName">__device__</span>
int </span><span class="member_name"><a href="#group__CUDA__MATH__INTRINSIC__INT_1gffff4cfc8958ec96329c11a797146573" shape="rect">__mul24</a> ( int <span> </span><span class="keyword keyword apiItemName">x</span>, int <span> </span><span class="keyword keyword apiItemName">y</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Calculate the least significant 32 bits of the product of the least significant 24 bits of two integers. </span></dd>
<dt><span class="member_long_type"><span class="keyword keyword apiItemName">__device__</span>
long long int </span><span class="member_name_long_type"><a href="#group__CUDA__MATH__INTRINSIC__INT_1g29b1d773d9393278aae147362827403b" shape="rect">__mul64hi</a> ( long long int<span> </span><span class="keyword keyword apiItemName">x</span>, long long int<span> </span><span class="keyword keyword apiItemName">y</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Calculate the most significant 64 bits of the product of the two 64 bit integers. </span></dd>
<dt><span class="member_type"><span class="keyword keyword apiItemName">__device__</span>
int </span><span class="member_name"><a href="#group__CUDA__MATH__INTRINSIC__INT_1gc3afa952add7894d6dda0931476d4882" shape="rect">__mulhi</a> ( int <span> </span><span class="keyword keyword apiItemName">x</span>, int <span> </span><span class="keyword keyword apiItemName">y</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Calculate the most significant 32 bits of the product of the two 32 bit integers. </span></dd>
<dt><span class="member_type"><span class="keyword keyword apiItemName">__device__</span>
int </span><span class="member_name"><a href="#group__CUDA__MATH__INTRINSIC__INT_1g43c9c7d2b9ebf202ff1ef5769989be46" shape="rect">__popc</a> ( unsigned int <span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Count the number of bits that are set to 1 in a 32 bit integer. </span></dd>
<dt><span class="member_type"><span class="keyword keyword apiItemName">__device__</span>
int </span><span class="member_name"><a href="#group__CUDA__MATH__INTRINSIC__INT_1g6bb2f1cc3495f3f2ebe1df6ec52b3aec" shape="rect">__popcll</a> ( unsigned long long int<span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Count the number of bits that are set to 1 in a 64 bit integer. </span></dd>
<dt><span class="member_type"><span class="keyword keyword apiItemName">__device__</span>
int </span><span class="member_name"><a href="#group__CUDA__MATH__INTRINSIC__INT_1gff2e17eb6a182d3f7547da33fc80042d" shape="rect">__rhadd</a> ( int , int ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Compute rounded average of signed input arguments, avoiding overflow in the intermediate sum. </span></dd>
<dt><span class="member_long_type"><span class="keyword keyword apiItemName">__device__</span>
unsigned int </span><span class="member_name_long_type"><a href="#group__CUDA__MATH__INTRINSIC__INT_1ge955ffc59084b5600dd5d223fb26beb0" shape="rect">__sad</a> ( int <span> </span><span class="keyword keyword apiItemName">x</span>, int <span> </span><span class="keyword keyword apiItemName">y</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">z</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Calculate
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mi>x</mi>
<mo>−</mo>
<mi>y</mi>
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mo>+</mo>
<mi>z</mi>
</math>
, the sum of absolute difference. </span></dd>
<dt><span class="member_long_type"><span class="keyword keyword apiItemName">__device__</span>
unsigned int </span><span class="member_name_long_type"><a href="#group__CUDA__MATH__INTRINSIC__INT_1g3c4c147e4533393e5a9822364ada9986" shape="rect">__uhadd</a> ( unsigned<span> </span><span class="keyword keyword apiItemName">int</span>, unsigned<span> </span><span class="keyword keyword apiItemName">int</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Compute average of unsigned input arguments, avoiding overflow in the intermediate sum. </span></dd>
<dt><span class="member_long_type"><span class="keyword keyword apiItemName">__device__</span>
unsigned int </span><span class="member_name_long_type"><a href="#group__CUDA__MATH__INTRINSIC__INT_1g2b1446551e854d164e3d4aae25f94a3f" shape="rect">__umul24</a> ( unsigned int <span> </span><span class="keyword keyword apiItemName">x</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">y</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Calculate the least significant 32 bits of the product of the least significant 24 bits of two unsigned integers. </span></dd>
<dt><span class="member_long_type"><span class="keyword keyword apiItemName">__device__</span>
unsigned long long int </span><span class="member_name_long_type"><a href="#group__CUDA__MATH__INTRINSIC__INT_1gefaf2a1bb2ad8986b2c248b74461e12e" shape="rect">__umul64hi</a> ( unsigned long long int<span> </span><span class="keyword keyword apiItemName">x</span>, unsigned long long int<span> </span><span class="keyword keyword apiItemName">y</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Calculate the most significant 64 bits of the product of the two 64 unsigned bit integers. </span></dd>
<dt><span class="member_long_type"><span class="keyword keyword apiItemName">__device__</span>
unsigned int </span><span class="member_name_long_type"><a href="#group__CUDA__MATH__INTRINSIC__INT_1g2ea43def3122a1bfb3eb8271a59f4470" shape="rect">__umulhi</a> ( unsigned int <span> </span><span class="keyword keyword apiItemName">x</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">y</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Calculate the most significant 32 bits of the product of the two 32 bit unsigned integers. </span></dd>
<dt><span class="member_long_type"><span class="keyword keyword apiItemName">__device__</span>
unsigned int </span><span class="member_name_long_type"><a href="#group__CUDA__MATH__INTRINSIC__INT_1g8de7a191b520ac2ff5d3836d68aa3481" shape="rect">__urhadd</a> ( unsigned<span> </span><span class="keyword keyword apiItemName">int</span>, unsigned<span> </span><span class="keyword keyword apiItemName">int</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Compute rounded average of unsigned input arguments, avoiding overflow in the intermediate sum. </span></dd>
<dt><span class="member_long_type"><span class="keyword keyword apiItemName">__device__</span>
unsigned int </span><span class="member_name_long_type"><a href="#group__CUDA__MATH__INTRINSIC__INT_1g58e819af40fc4a3e9e9c3a4c13cbd0e2" shape="rect">__usad</a> ( unsigned int <span> </span><span class="keyword keyword apiItemName">x</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">y</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">z</span> ) </span></dt>
<dd class="shortdesc"><span></span><span class="desc">Calculate
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mi>x</mi>
<mo>−</mo>
<mi>y</mi>
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mo>+</mo>
<mi>z</mi>
</math>
, the sum of absolute difference. </span></dd>
</dl>
<div class="description">
<h3 class="sectiontitle">Functions</h3>
<dl class="description">
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1gc84ef1115946870edbcebddc0d539c5a" id="group__CUDA__MATH__INTRINSIC__INT_1gc84ef1115946870edbcebddc0d539c5a" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
unsigned int __brev ( unsigned int <span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="description">
<div class="section">Reverse the bit order of a 32 bit unsigned integer. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns the bit-reversed value of <tt class="ph tt code">x</tt>. i.e. bit N of the return value corresponds to bit 31-N of <tt class="ph tt code">x</tt>.
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Reverses the bit order of the 32 bit unsigned integer <tt class="ph tt code">x</tt>.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1g554354459699a11acfb072cf536974cd" id="group__CUDA__MATH__INTRINSIC__INT_1g554354459699a11acfb072cf536974cd" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
unsigned long long int __brevll ( unsigned long long int<span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="description">
<div class="section">Reverse the bit order of a 64 bit unsigned integer. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns the bit-reversed value of <tt class="ph tt code">x</tt>. i.e. bit N of the return value corresponds to bit 63-N of <tt class="ph tt code">x</tt>.
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Reverses the bit order of the 64 bit unsigned integer <tt class="ph tt code">x</tt>.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1g0b8b8156fe619205bf8d65acd8f29131" id="group__CUDA__MATH__INTRINSIC__INT_1g0b8b8156fe619205bf8d65acd8f29131" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
unsigned int __byte_perm ( unsigned int <span> </span><span class="keyword keyword apiItemName">x</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">y</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">s</span> ) </span></dt>
<dd class="description">
<div class="section">Return selected bytes from two 32 bit unsigned integers. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">The returned value r is computed to be: <tt class="ph tt code">result[n] := input[selector[n]]</tt> where <tt class="ph tt code">result[n]</tt> is the nth byte of r.
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>byte_perm(x,y,s) returns a 32-bit integer consisting of four bytes from eight input bytes provided in the two input integers
<tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt>, as specified by a selector, <tt class="ph tt code">s</tt>.
</p>
<p class="p">The input bytes are indexed as follows:
input[0] = x<7:0> input[1] = x<15:8>
input[2] = x<23:16> input[3] = x<31:24>
input[4] = y<7:0> input[5] = y<15:8>
input[6] = y<23:16> input[7] = y<31:24>
The selector indices are as follows (the upper 16-bits of the selector are not used):
selector[0] = s<2:0> selector[1] = s<6:4>
selector[2] = s<10:8> selector[3] = s<14:12>
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1gd45548f57952ed410fa5d824984f16d0" id="group__CUDA__MATH__INTRINSIC__INT_1gd45548f57952ed410fa5d824984f16d0" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
int __clz ( int <span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="description">
<div class="section">Return the number of consecutive high-order zero bits in a 32 bit integer. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns a value between 0 and 32 inclusive representing the number of zero bits. </p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Count the number of consecutive leading zero bits, starting at the most significant bit (bit 31) of <tt class="ph tt code">x</tt>.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1g88ff76484edc65cafbef80e71a1daa53" id="group__CUDA__MATH__INTRINSIC__INT_1g88ff76484edc65cafbef80e71a1daa53" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
int __clzll ( long long int<span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="description">
<div class="section">Count the number of consecutive high-order zero bits in a 64 bit integer. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns a value between 0 and 64 inclusive representing the number of zero bits. </p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Count the number of consecutive leading zero bits, starting at the most significant bit (bit 63) of <tt class="ph tt code">x</tt>.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1gaf1eb22243e29e0b7222adee8ae7d4e4" id="group__CUDA__MATH__INTRINSIC__INT_1gaf1eb22243e29e0b7222adee8ae7d4e4" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
int __ffs ( int <span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="description">
<div class="section">Find the position of the least significant bit set to 1 in a 32 bit integer. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns a value between 0 and 32 inclusive representing the position of the first bit set.
<ul>
<li>__ffs(0) returns 0. </li>
</ul>
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Find the position of the first (least significant) bit set to 1 in <tt class="ph tt code">x</tt>, where the least significant bit position is 1.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1gc42b0f1b68e9db038015d40a18d305df" id="group__CUDA__MATH__INTRINSIC__INT_1gc42b0f1b68e9db038015d40a18d305df" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
int __ffsll ( long long int<span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="description">
<div class="section">Find the position of the least significant bit set to 1 in a 64 bit integer. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns a value between 0 and 64 inclusive representing the position of the first bit set.
<ul>
<li>__ffsll(0) returns 0. </li>
</ul>
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Find the position of the first (least significant) bit set to 1 in <tt class="ph tt code">x</tt>, where the least significant bit position is 1.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1g6acbd5fd1fef78022471b58852e495da" id="group__CUDA__MATH__INTRINSIC__INT_1g6acbd5fd1fef78022471b58852e495da" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
int __hadd ( int , int ) </span></dt>
<dd class="description">
<div class="section">Compute average of signed input arguments, avoiding overflow in the intermediate sum. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns a signed integer value representing the signed average value of the two inputs. </p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Compute average of signed input arguments <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt> as ( <tt class="ph tt code">x</tt> + <tt class="ph tt code">y</tt> ) >> 1, avoiding overflow in the intermediate sum.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1gffff4cfc8958ec96329c11a797146573" id="group__CUDA__MATH__INTRINSIC__INT_1gffff4cfc8958ec96329c11a797146573" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
int __mul24 ( int <span> </span><span class="keyword keyword apiItemName">x</span>, int <span> </span><span class="keyword keyword apiItemName">y</span> ) </span></dt>
<dd class="description">
<div class="section">Calculate the least significant 32 bits of the product of the least significant 24 bits of two integers. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns the least significant 32 bits of the product <tt class="ph tt code">x</tt> * <tt class="ph tt code">y</tt>.
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Calculate the least significant 32 bits of the product of the least significant 24 bits of <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt>. The high order 8 bits of <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt> are ignored.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1g29b1d773d9393278aae147362827403b" id="group__CUDA__MATH__INTRINSIC__INT_1g29b1d773d9393278aae147362827403b" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
long long int __mul64hi ( long long int<span> </span><span class="keyword keyword apiItemName">x</span>, long long int<span> </span><span class="keyword keyword apiItemName">y</span> ) </span></dt>
<dd class="description">
<div class="section">Calculate the most significant 64 bits of the product of the two 64 bit integers. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns the most significant 64 bits of the product <tt class="ph tt code">x</tt> * <tt class="ph tt code">y</tt>.
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Calculate the most significant 64 bits of the 128-bit product <tt class="ph tt code">x</tt> * <tt class="ph tt code">y</tt>, where <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt> are 64-bit integers.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1gc3afa952add7894d6dda0931476d4882" id="group__CUDA__MATH__INTRINSIC__INT_1gc3afa952add7894d6dda0931476d4882" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
int __mulhi ( int <span> </span><span class="keyword keyword apiItemName">x</span>, int <span> </span><span class="keyword keyword apiItemName">y</span> ) </span></dt>
<dd class="description">
<div class="section">Calculate the most significant 32 bits of the product of the two 32 bit integers. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns the most significant 32 bits of the product <tt class="ph tt code">x</tt> * <tt class="ph tt code">y</tt>.
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Calculate the most significant 32 bits of the 64-bit product <tt class="ph tt code">x</tt> * <tt class="ph tt code">y</tt>, where <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt> are 32-bit integers.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1g43c9c7d2b9ebf202ff1ef5769989be46" id="group__CUDA__MATH__INTRINSIC__INT_1g43c9c7d2b9ebf202ff1ef5769989be46" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
int __popc ( unsigned int <span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="description">
<div class="section">Count the number of bits that are set to 1 in a 32 bit integer. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns a value between 0 and 32 inclusive representing the number of set bits. </p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Count the number of bits that are set to 1 in <tt class="ph tt code">x</tt>.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1g6bb2f1cc3495f3f2ebe1df6ec52b3aec" id="group__CUDA__MATH__INTRINSIC__INT_1g6bb2f1cc3495f3f2ebe1df6ec52b3aec" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
int __popcll ( unsigned long long int<span> </span><span class="keyword keyword apiItemName">x</span> ) </span></dt>
<dd class="description">
<div class="section">Count the number of bits that are set to 1 in a 64 bit integer. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns a value between 0 and 64 inclusive representing the number of set bits. </p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Count the number of bits that are set to 1 in <tt class="ph tt code">x</tt>.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1gff2e17eb6a182d3f7547da33fc80042d" id="group__CUDA__MATH__INTRINSIC__INT_1gff2e17eb6a182d3f7547da33fc80042d" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
int __rhadd ( int , int ) </span></dt>
<dd class="description">
<div class="section">Compute rounded average of signed input arguments, avoiding overflow in the intermediate sum. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns a signed integer value representing the signed rounded average value of the two inputs. </p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Compute average of signed input arguments <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt> as ( <tt class="ph tt code">x</tt> + <tt class="ph tt code">y</tt> + 1 ) >> 1, avoiding overflow in the intermediate sum.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1ge955ffc59084b5600dd5d223fb26beb0" id="group__CUDA__MATH__INTRINSIC__INT_1ge955ffc59084b5600dd5d223fb26beb0" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
unsigned int __sad ( int <span> </span><span class="keyword keyword apiItemName">x</span>, int <span> </span><span class="keyword keyword apiItemName">y</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">z</span> ) </span></dt>
<dd class="description">
<div class="section">Calculate
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mi>x</mi>
<mo>−</mo>
<mi>y</mi>
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mo>+</mo>
<mi>z</mi>
</math>
, the sum of absolute difference.
</div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mi>x</mi>
<mo>−</mo>
<mi>y</mi>
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mo>+</mo>
<mi>z</mi>
</math>
.
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Calculate
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mi>x</mi>
<mo>−</mo>
<mi>y</mi>
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mo>+</mo>
<mi>z</mi>
</math>
, the 32-bit sum of the third argument <tt class="ph tt code">z</tt> plus and the absolute value of the difference between the first argument, <tt class="ph tt code">x</tt>, and second argument, <tt class="ph tt code">y</tt>.
</p>
<p class="p">Inputs <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt> are signed 32-bit integers, input <tt class="ph tt code">z</tt> is a 32-bit unsigned integer.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1g3c4c147e4533393e5a9822364ada9986" id="group__CUDA__MATH__INTRINSIC__INT_1g3c4c147e4533393e5a9822364ada9986" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
unsigned int __uhadd ( unsigned<span> </span><span class="keyword keyword apiItemName">int</span>, unsigned<span> </span><span class="keyword keyword apiItemName">int</span> ) </span></dt>
<dd class="description">
<div class="section">Compute average of unsigned input arguments, avoiding overflow in the intermediate sum. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns an unsigned integer value representing the unsigned average value of the two inputs. </p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Compute average of unsigned input arguments <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt> as ( <tt class="ph tt code">x</tt> + <tt class="ph tt code">y</tt> ) >> 1, avoiding overflow in the intermediate sum.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1g2b1446551e854d164e3d4aae25f94a3f" id="group__CUDA__MATH__INTRINSIC__INT_1g2b1446551e854d164e3d4aae25f94a3f" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
unsigned int __umul24 ( unsigned int <span> </span><span class="keyword keyword apiItemName">x</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">y</span> ) </span></dt>
<dd class="description">
<div class="section">Calculate the least significant 32 bits of the product of the least significant 24 bits of two unsigned integers. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns the least significant 32 bits of the product <tt class="ph tt code">x</tt> * <tt class="ph tt code">y</tt>.
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Calculate the least significant 32 bits of the product of the least significant 24 bits of <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt>. The high order 8 bits of <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt> are ignored.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1gefaf2a1bb2ad8986b2c248b74461e12e" id="group__CUDA__MATH__INTRINSIC__INT_1gefaf2a1bb2ad8986b2c248b74461e12e" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
unsigned long long int __umul64hi ( unsigned long long int<span> </span><span class="keyword keyword apiItemName">x</span>, unsigned long long int<span> </span><span class="keyword keyword apiItemName">y</span> ) </span></dt>
<dd class="description">
<div class="section">Calculate the most significant 64 bits of the product of the two 64 unsigned bit integers. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns the most significant 64 bits of the product <tt class="ph tt code">x</tt> * <tt class="ph tt code">y</tt>.
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Calculate the most significant 64 bits of the 128-bit product <tt class="ph tt code">x</tt> * <tt class="ph tt code">y</tt>, where <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt> are 64-bit unsigned integers.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1g2ea43def3122a1bfb3eb8271a59f4470" id="group__CUDA__MATH__INTRINSIC__INT_1g2ea43def3122a1bfb3eb8271a59f4470" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
unsigned int __umulhi ( unsigned int <span> </span><span class="keyword keyword apiItemName">x</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">y</span> ) </span></dt>
<dd class="description">
<div class="section">Calculate the most significant 32 bits of the product of the two 32 bit unsigned integers. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns the most significant 32 bits of the product <tt class="ph tt code">x</tt> * <tt class="ph tt code">y</tt>.
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Calculate the most significant 32 bits of the 64-bit product <tt class="ph tt code">x</tt> * <tt class="ph tt code">y</tt>, where <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt> are 32-bit unsigned integers.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1g8de7a191b520ac2ff5d3836d68aa3481" id="group__CUDA__MATH__INTRINSIC__INT_1g8de7a191b520ac2ff5d3836d68aa3481" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
unsigned int __urhadd ( unsigned<span> </span><span class="keyword keyword apiItemName">int</span>, unsigned<span> </span><span class="keyword keyword apiItemName">int</span> ) </span></dt>
<dd class="description">
<div class="section">Compute rounded average of unsigned input arguments, avoiding overflow in the intermediate sum. </div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns an unsigned integer value representing the unsigned rounded average value of the two inputs. </p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Compute average of unsigned input arguments <tt class="ph tt code">x</tt> and <tt class="ph tt code">y</tt> as ( <tt class="ph tt code">x</tt> + <tt class="ph tt code">y</tt> + 1 ) >> 1, avoiding overflow in the intermediate sum.
</p>
<p class="p"></p>
</div>
</dd>
<dt class="description"><a name="group__CUDA__MATH__INTRINSIC__INT_1g58e819af40fc4a3e9e9c3a4c13cbd0e2" id="group__CUDA__MATH__INTRINSIC__INT_1g58e819af40fc4a3e9e9c3a4c13cbd0e2" shape="rect">
<!-- --></a><span><span class="keyword keyword apiItemName">__device__</span>
unsigned int __usad ( unsigned int <span> </span><span class="keyword keyword apiItemName">x</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">y</span>, unsigned int <span> </span><span class="keyword keyword apiItemName">z</span> ) </span></dt>
<dd class="description">
<div class="section">Calculate
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mi>x</mi>
<mo>−</mo>
<mi>y</mi>
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mo>+</mo>
<mi>z</mi>
</math>
, the sum of absolute difference.
</div>
<div class="section">
<h6 class="return_header">Returns</h6>
<p class="return">Returns
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mi>x</mi>
<mo>−</mo>
<mi>y</mi>
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mo>+</mo>
<mi>z</mi>
</math>
.
</p>
</div>
<div class="section">
<h6 class="description_header">Description</h6>
<p>Calculate
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mi>x</mi>
<mo>−</mo>
<mi>y</mi>
<mrow class="MJX-TeXAtom-ORD">
<mo stretchy="false">|</mo>
</mrow>
<mo>+</mo>
<mi>z</mi>
</math>
, the 32-bit sum of the third argument <tt class="ph tt code">z</tt> plus and the absolute value of the difference between the first argument, <tt class="ph tt code">x</tt>, and second argument, <tt class="ph tt code">y</tt>.
</p>
<p class="p">Inputs <tt class="ph tt code">x</tt>, <tt class="ph tt code">y</tt>, and <tt class="ph tt code">z</tt> are unsigned 32-bit integers.
</p>
<p class="p"></p>
</div>
</dd>
</dl>
</div>
</div>
<hr id="contents-end"></hr>
</article>
</div>
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distrib
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Mageia
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x86_64
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media
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nonfree-updates
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fd8445e7e4d58b8cfe6e0150bd441ee1
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