diff --git a/lib/node_modules/@stdlib/stats/base/dminsorted/README.md b/lib/node_modules/@stdlib/stats/base/dminsorted/README.md index dd2101aa24ec..2d6641d11787 100644 --- a/lib/node_modules/@stdlib/stats/base/dminsorted/README.md +++ b/lib/node_modules/@stdlib/stats/base/dminsorted/README.md @@ -36,7 +36,7 @@ limitations under the License. var dminsorted = require( '@stdlib/stats/base/dminsorted' ); ``` -#### dminsorted( N, x, stride ) +#### dminsorted( N, x, strideX ) Computes the minimum value of a sorted double-precision floating-point strided array `x`. @@ -44,15 +44,13 @@ Computes the minimum value of a sorted double-precision floating-point strided a var Float64Array = require( '@stdlib/array/float64' ); var x = new Float64Array( [ 1.0, 2.0, 3.0 ] ); -var N = x.length; -var v = dminsorted( N, x, 1 ); +var v = dminsorted( x.length, x, 1 ); // returns 1.0 x = new Float64Array( [ 3.0, 2.0, 1.0 ] ); -N = x.length; -v = dminsorted( N, x, 1 ); +v = dminsorted( x.length, x, 1 ); // returns 1.0 ``` @@ -60,18 +58,16 @@ The function has the following parameters: - **N**: number of indexed elements. - **x**: sorted input [`Float64Array`][@stdlib/array/float64]. -- **stride**: index increment for `x`. +- **strideX**: stride length for `x`. -The `N` and `stride` parameters determine which elements in `x` are accessed at runtime. For example, to compute the minimum value of every other element in `x`, +The `N` and stride parameters determine which elements in the strided array are accessed at runtime. For example, to compute the minimum value of every other element in `x`, ```javascript var Float64Array = require( '@stdlib/array/float64' ); -var floor = require( '@stdlib/math/base/special/floor' ); var x = new Float64Array( [ 1.0, 2.0, 2.0, -7.0, 3.0, 3.0, 4.0, 2.0 ] ); -var N = floor( x.length / 2 ); -var v = dminsorted( N, x, 2 ); +var v = dminsorted( 4, x, 2 ); // returns 1.0 ``` @@ -81,18 +77,15 @@ Note that indexing is relative to the first index. To introduce an offset, use [ ```javascript var Float64Array = require( '@stdlib/array/float64' ); -var floor = require( '@stdlib/math/base/special/floor' ); var x0 = new Float64Array( [ 2.0, 1.0, 2.0, 2.0, -2.0, 2.0, 3.0, 4.0 ] ); var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element -var N = floor( x0.length / 2 ); - -var v = dminsorted( N, x1, 2 ); +var v = dminsorted( 4, x1, 2 ); // returns 1.0 ``` -#### dminsorted.ndarray( N, x, stride, offset ) +#### dminsorted.ndarray( N, x, strideX, offsetX ) Computes the minimum value of a sorted double-precision floating-point strided array using alternative indexing semantics. @@ -100,26 +93,23 @@ Computes the minimum value of a sorted double-precision floating-point strided a var Float64Array = require( '@stdlib/array/float64' ); var x = new Float64Array( [ 1.0, 2.0, 3.0 ] ); -var N = x.length; -var v = dminsorted.ndarray( N, x, 1, 0 ); +var v = dminsorted.ndarray( x.length, x, 1, 0 ); // returns 1.0 ``` The function has the following additional parameters: -- **offset**: starting index for `x`. +- **offsetX**: starting index for `x`. -While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying `buffer`, the `offset` parameter supports indexing semantics based on a starting index. For example, to calculate the minimum value for every other value in `x` starting from the second value +While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying buffer, the offset parameter supports indexing semantics based on a starting index. For example, to calculate the minimum value for every other element in `x` starting from the second element ```javascript var Float64Array = require( '@stdlib/array/float64' ); -var floor = require( '@stdlib/math/base/special/floor' ); var x = new Float64Array( [ 2.0, 1.0, 2.0, 2.0, -2.0, 2.0, 3.0, 4.0 ] ); -var N = floor( x.length / 2 ); -var v = dminsorted.ndarray( N, x, 2, 1 ); +var v = dminsorted.ndarray( 4, x, 2, 1 ); // returns 1.0 ``` @@ -145,16 +135,13 @@ var v = dminsorted.ndarray( N, x, 2, 1 ); ```javascript -var Float64Array = require( '@stdlib/array/float64' ); +var linspace = require( '@stdlib/array/linspace' ); var dminsorted = require( '@stdlib/stats/base/dminsorted' ); -var x; -var i; - -x = new Float64Array( 10 ); -for ( i = 0; i < x.length; i++ ) { - x[ i ] = i - 5.0; -} +var options = { + 'dtype': 'float64' +}; +var x = linspace( -5.0, 5.0, 10, options ); console.log( x ); var v = dminsorted( x.length, x, 1 ); @@ -165,6 +152,107 @@ console.log( v ); + + +
+ +### Usage + +```c +#include "stdlib/stats/base/dminsorted.h" +``` + +#### stdlib_strided_dminsorted( N, \*X, strideX ) + +Computes the minimum value of a sorted double-precision floating-point strided array. + +```c +const double x[] = { 1.0, 2.0, 3.0 }; + +double v = stdlib_strided_dmax( 3, x, 1 ); +// returns 1.0 +``` + +The function accepts the following arguments: + +- **N**: `[in] CBLAS_INT` number of indexed elements. +- **X**: `[in] double*` input array. +- **strideX**: `[in] CBLAS_INT` stride length for `X`. + +```c +double stdlib_strided_dminsorted( const CBLAS_INT N, const double *X, const CBLAS_INT strideX ); +``` + +#### stdlib_strided_dminsorted_ndarray( N, \*X, strideX, offsetX ) + +Computes the minimum value of a sorted double-precision floating-point strided array using alternative indexing semantics. + +```c +const double x[] = { 1.0, 2.0, 3.0 }; + +double v = stdlib_strided_dminsorted_ndarray( 3, x, 1, 0 ); +// returns 1.0 +``` + +The function accepts the following arguments: + +- **N**: `[in] CBLAS_INT` number of indexed elements. +- **X**: `[in] double*` input array. +- **strideX**: `[in] CBLAS_INT` stride length for `X`. +- **offsetX**: `[in] CBLAS_INT` starting index for `X`. + +```c +double stdlib_strided_dminsorted_ndarray( const CBLAS_INT N, const double *X, const CBLAS_INT strideX, const CBLAS_INT offsetX ); +``` + +
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+ +### Examples + +```c +#include "stdlib/stats/base/dminsorted.h" +#include + +int main( void ) { + // Create a strided array: + const double x[] = { 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 }; + + // Specify the number of elements: + const int N = 4; + + // Specify the stride length: + const int strideX = 2; + + // Compute the minimum value: + double v = stdlib_strided_dminsorted( N, x, strideX ); + + // Print the result: + printf( "min: %lf\n", v ); +} +``` + +
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