Skip to content

refactor: use constants/float32/nan in stats/strided/snanmeanpn #11769

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
manit2004 wants to merge 2 commits into
base: develop
Choose a base branch
from
Open

refactor: use constants/float32/nan in stats/strided/snanmeanpn #11769

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
375991b
refactor(stats/strided/snanmeanpn): replace inline 0.0f/0.0f with STD…
manit2004 Apr 26, 2026
0bd5464
Merge branch 'develop' into refactor-snanmeanpn-nan
manit2004 Apr 26, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 4 additions & 3 deletions lib/node_modules/@stdlib/stats/strided/snanmeanpn/README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -196,14 +196,15 @@ console.log( v );

```c
#include "stdlib/stats/strided/snanmeanpn.h"
include "stdlib/constants/float32/nan.h"
```

#### stdlib_strided_snanmeanpn( N, \*X, strideX )

Computes the [arithmetic mean][arithmetic-mean] of a single-precision floating-point strided array, ignoring `NaN` values and using a two-pass error correction algorithm.

```c
const float x[] = { 1.0f, -2.0f, 0.0f/0.0f, 2.0f };
const float x[] = { 1.0f, -2.0f, STDLIB_CONSTANT_FLOAT32_NAN, 2.0f };

float v = stdlib_strided_snanmeanpn( 4, x, 1 );
// returns ~0.33333f
Expand All @@ -224,7 +225,7 @@ float stdlib_strided_snanmeanpn( const CBLAS_INT N, const float *X, const CBLAS_
Computes the [arithmetic mean][arithmetic-mean] of a single-precision floating-point strided array, ignoring `NaN` values and using a two-pass error correction algorithm and alternative indexing semantics.

```c
const float x[] = { 1.0f, -2.0f, 0.0f/0.0f, 2.0f };
const float x[] = { 1.0f, -2.0f, STDLIB_CONSTANT_FLOAT32_NAN, 2.0f };

float v = stdlib_strided_snanmeanpn_ndarray( 4, x, 1, 0 );
// returns ~0.33333f
Expand Down Expand Up @@ -265,7 +266,7 @@ float stdlib_strided_snanmeanpn_ndarray( const CBLAS_INT N, const float *X, cons

int main( void ) {
// Create a strided array:
const float x[] = { 1.0f, 2.0f, 0.0f/0.0f, 3.0f, 0.0f/0.0f, 4.0f, 5.0f, 6.0f, 0.0f/0.0f, 7.0f, 8.0f, 0.0f/0.0f };
const float x[] = { 1.0f, 2.0f, STDLIB_CONSTANT_FLOAT32_NAN, 3.0f, STDLIB_CONSTANT_FLOAT32_NAN, 4.0f, 5.0f, 6.0f, 0.0f/0.0f, 7.0f, 8.0f, STDLIB_CONSTANT_FLOAT32_NAN };

// Specify the number of elements:
const int N = 6;
Expand Down
5 changes: 3 additions & 2 deletions lib/node_modules/@stdlib/stats/strided/snanmeanpn/benchmark/c/benchmark.length.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
*/

#include "stdlib/stats/strided/snanmeanpn.h"
#include "stdlib/constants/float32/nan.h"
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
Expand Down Expand Up @@ -103,7 +104,7 @@ static double benchmark1( int iterations, int len ) {

for ( i = 0; i < len; i++ ) {
if ( rand_float() < 0.2f ) {
x[ i ] = 0.0f / 0.0f; // NaN
x[ i ] = STDLIB_CONSTANT_FLOAT32_NAN;
} else {
x[ i ] = ( rand_float() * 20000.0f ) - 10000.0f;
}
Expand Down Expand Up @@ -141,7 +142,7 @@ static double benchmark2( int iterations, int len ) {

for ( i = 0; i < len; i++ ) {
if ( rand_float() < 0.2 ) {
x[ i ] = 0.0 / 0.0; // NaN
x[ i ] = STDLIB_CONSTANT_FLOAT32_NAN;
} else {
x[ i ] = ( rand_float() * 20000.0 ) - 10000.0;
}
Expand Down
3 changes: 2 additions & 1 deletion lib/node_modules/@stdlib/stats/strided/snanmeanpn/examples/c/example.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -17,11 +17,12 @@
*/

#include "stdlib/stats/strided/snanmeanpn.h"
#include "stdlib/constants/float32/nan.h"
#include <stdio.h>

int main( void ) {
// Create a strided array:
const float x[] = { 1.0f, 2.0f, 0.0f/0.0f, 3.0f, 0.0f/0.0f, 4.0f, 5.0f, 6.0f, 0.0f/0.0f, 7.0f, 8.0f, 0.0f/0.0f };
const float x[] = { 1.0f, 2.0f, STDLIB_CONSTANT_FLOAT32_NAN, 3.0f, STDLIB_CONSTANT_FLOAT32_NAN, 4.0f, 5.0f, 6.0f, STDLIB_CONSTANT_FLOAT32_NAN, 7.0f, 8.0f, STDLIB_CONSTANT_FLOAT32_NAN };

// Specify the number of elements:
const int N = 6;
Expand Down
12 changes: 8 additions & 4 deletions lib/node_modules/@stdlib/stats/strided/snanmeanpn/manifest.json
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,8 @@
"@stdlib/napi/argv",
"@stdlib/napi/argv-int64",
"@stdlib/napi/argv-strided-float32array",
"@stdlib/napi/create-double"
"@stdlib/napi/create-double",
"@stdlib/constants/float32/nan"
]
},
{
Expand All @@ -60,7 +61,8 @@
"libpath": [],
"dependencies": [
"@stdlib/blas/base/shared",
"@stdlib/strided/base/stride2offset"
"@stdlib/strided/base/stride2offset",
"@stdlib/constants/float32/nan"
]
},
{
Expand All @@ -76,7 +78,8 @@
"libpath": [],
"dependencies": [
"@stdlib/blas/base/shared",
"@stdlib/strided/base/stride2offset"
"@stdlib/strided/base/stride2offset",
"@stdlib/constants/float32/nan"
]
},
{
Expand All @@ -92,7 +95,8 @@
"libpath": [],
"dependencies": [
"@stdlib/blas/base/shared",
"@stdlib/strided/base/stride2offset"
"@stdlib/strided/base/stride2offset",
"@stdlib/constants/float32/nan"
]
}
]
Expand Down
5 changes: 3 additions & 2 deletions lib/node_modules/@stdlib/stats/strided/snanmeanpn/src/main.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
#include "stdlib/stats/strided/snanmeanpn.h"
#include "stdlib/blas/base/shared.h"
#include "stdlib/strided/base/stride2offset.h"
#include "stdlib/constants/float32/nan.h"

/**
* Computes the arithmetic mean of a single-precision floating-point strided array, ignoring `NaN` values and using a two-pass error correction algorithm.
Expand Down Expand Up @@ -62,7 +63,7 @@ float API_SUFFIX(stdlib_strided_snanmeanpn_ndarray)( const CBLAS_INT N, const fl
float v;

if ( N <= 0 ) {
return 0.0f / 0.0f; // NaN
return STDLIB_CONSTANT_FLOAT32_NAN;
}
if ( N == 1 || strideX == 0 ) {
return X[ offsetX ];
Expand All @@ -82,7 +83,7 @@ float API_SUFFIX(stdlib_strided_snanmeanpn_ndarray)( const CBLAS_INT N, const fl
ix += strideX;
}
if ( n == 0 ) {
return 0.0f / 0.0f; // NaN
return STDLIB_CONSTANT_FLOAT32_NAN;
}
dn = (double)n;
s = (double)s / dn;
Expand Down