diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dwhere/README.md b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dwhere/README.md
index 96ed983e7c71..31854e3c7bc6 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/dwhere/README.md
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/dwhere/README.md
@@ -111,6 +111,182 @@ console.log( ndarray2array( out ) );
+
+
+* * *
+
+
+
+## C APIs
+
+
+
+
+
+
+
+
+
+
+
+### Usage
+
+```c
+#include "stdlib/blas/ext/base/ndarray/dwhere.h"
+```
+
+#### stdlib_blas_ext_dwhere( arrays )
+
+Takes elements from one of two one-dimensional double-precision floating-point ndarrays depending on a condition.
+
+```c
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/ndarray/dtypes.h"
+#include "stdlib/ndarray/index_modes.h"
+#include "stdlib/ndarray/orders.h"
+#include "stdlib/ndarray/base/bytes_per_element.h"
+#include
+#include
+
+// Create data buffers:
+const uint8_t dataC[] = { 1, 0, 1, 0 };
+const double dataX[] = { 1.0, 2.0, 3.0, 4.0 };
+const double dataY[] = { 5.0, 6.0, 7.0, 8.0 };
+double dataOut[] = { 0.0, 0.0, 0.0, 0.0 };
+
+int64_t shape[] = { 4 };
+int64_t stridesC[] = { STDLIB_NDARRAY_BOOL_BYTES_PER_ELEMENT };
+int64_t strides[] = { STDLIB_NDARRAY_FLOAT64_BYTES_PER_ELEMENT };
+int8_t submodes[] = { STDLIB_NDARRAY_INDEX_ERROR };
+
+struct ndarray *c = stdlib_ndarray_allocate( STDLIB_NDARRAY_BOOL, (uint8_t *)dataC, 1, shape, stridesC, 0, STDLIB_NDARRAY_ROW_MAJOR, STDLIB_NDARRAY_INDEX_ERROR, 1, submodes );
+struct ndarray *x = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT64, (uint8_t *)dataX, 1, shape, strides, 0, STDLIB_NDARRAY_ROW_MAJOR, STDLIB_NDARRAY_INDEX_ERROR, 1, submodes );
+struct ndarray *y = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT64, (uint8_t *)dataY, 1, shape, strides, 0, STDLIB_NDARRAY_ROW_MAJOR, STDLIB_NDARRAY_INDEX_ERROR, 1, submodes );
+struct ndarray *out = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT64, (uint8_t *)dataOut, 1, shape, strides, 0, STDLIB_NDARRAY_ROW_MAJOR, STDLIB_NDARRAY_INDEX_ERROR, 1, submodes );
+
+// Perform computation:
+const struct ndarray *arrays[] = { c, x, y, out };
+stdlib_blas_ext_dwhere( arrays );
+
+// Free allocated memory:
+stdlib_ndarray_free( c );
+stdlib_ndarray_free( x );
+stdlib_ndarray_free( y );
+stdlib_ndarray_free( out );
+```
+
+The function accepts the following arguments:
+
+- **arrays**: `[in] struct ndarray**` list containing the following ndarrays:
+
+ - `[in] struct ndarray*` a one-dimensional condition ndarray.
+ - `[in] struct ndarray*` first one-dimensional input ndarray.
+ - `[in] struct ndarray*` second one-dimensional input ndarray.
+ - `[out] struct ndarray*` a one-dimensional output ndarray.
+
+```c
+void stdlib_blas_ext_dwhere( const struct ndarray *arrays[] );
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+### Examples
+
+```c
+#include "stdlib/blas/ext/base/ndarray/dwhere.h"
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/ndarray/dtypes.h"
+#include "stdlib/ndarray/index_modes.h"
+#include "stdlib/ndarray/orders.h"
+#include "stdlib/ndarray/base/bytes_per_element.h"
+#include
+#include
+#include
+#include
+
+int main( void ) {
+ // Create data buffers:
+ const uint8_t dataC[] = { 1, 0, 1, 0 };
+ const double dataX[] = { 1.0, 2.0, 3.0, 4.0 };
+ const double dataY[] = { 5.0, 6.0, 7.0, 8.0 };
+ double dataOut[] = { 0.0, 0.0, 0.0, 0.0 };
+
+ // Specify the number of array dimensions:
+ const int64_t ndims = 1;
+
+ // Specify the array shape:
+ int64_t shape[] = { 4 };
+
+ // Specify the array strides:
+ int64_t stridesC[] = { STDLIB_NDARRAY_BOOL_BYTES_PER_ELEMENT };
+ int64_t strides[] = { STDLIB_NDARRAY_FLOAT64_BYTES_PER_ELEMENT };
+
+ // Specify the byte offset:
+ const int64_t offset = 0;
+
+ // Specify the array order:
+ const enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;
+
+ // Specify the index mode:
+ const enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;
+
+ // Specify the subscript index modes:
+ int8_t submodes[] = { STDLIB_NDARRAY_INDEX_ERROR };
+ const int64_t nsubmodes = 1;
+
+ // Create ndarrays:
+ struct ndarray *c = stdlib_ndarray_allocate( STDLIB_NDARRAY_BOOL, (uint8_t *)dataC, ndims, shape, stridesC, offset, order, imode, nsubmodes, submodes );
+ struct ndarray *x = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT64, (uint8_t *)dataX, ndims, shape, strides, offset, order, imode, nsubmodes, submodes );
+ struct ndarray *y = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT64, (uint8_t *)dataY, ndims, shape, strides, offset, order, imode, nsubmodes, submodes );
+ struct ndarray *out = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT64, (uint8_t *)dataOut, ndims, shape, strides, offset, order, imode, nsubmodes, submodes );
+ if ( c == NULL || x == NULL || y == NULL || out == NULL ) {
+ fprintf( stderr, "Error allocating memory.\n" );
+ exit( 1 );
+ }
+
+ // Define a list of ndarrays:
+ const struct ndarray *arrays[] = { c, x, y, out };
+
+ // Perform computation:
+ stdlib_blas_ext_dwhere( arrays );
+
+ // Print the result:
+ for ( int i = 0; i < 4; i++ ) {
+ printf( "out[ %i ] = %lf\n", i, dataOut[ i ] );
+ }
+
+ // Free allocated memory:
+ stdlib_ndarray_free( c );
+ stdlib_ndarray_free( x );
+ stdlib_ndarray_free( y );
+ stdlib_ndarray_free( out );
+}
+```
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