From 3760b0018ed0b55e1d708e7bb00387c6f409de1c Mon Sep 17 00:00:00 2001 From: Ujjwal Verma Date: Fri, 9 Oct 2026 21:40:56 +0530 Subject: [PATCH 1/2] feat: add C implementation for `blas/ext/base/ndarray/cindex-of-falsy` --- .../base/ndarray/cindex-of-falsy/README.md | 181 +++++++++- .../cindex-of-falsy/benchmark/benchmark.js | 4 +- .../benchmark/benchmark.native.js | 115 +++++++ .../cindex-of-falsy/benchmark/c/Makefile | 146 ++++++++ .../benchmark/c/benchmark.length.c | 199 +++++++++++ .../base/ndarray/cindex-of-falsy/binding.gyp | 170 ++++++++++ .../ndarray/cindex-of-falsy/docs/repl.txt | 2 +- .../cindex-of-falsy/docs/types/index.d.ts | 2 +- .../cindex-of-falsy/docs/types/test.ts | 4 +- .../cindex-of-falsy/examples/c/Makefile | 146 ++++++++ .../cindex-of-falsy/examples/c/example.c | 90 +++++ .../ndarray/cindex-of-falsy/examples/index.js | 2 +- .../base/ndarray/cindex-of-falsy/include.gypi | 53 +++ .../blas/ext/base/ndarray/cindex_of_falsy.h | 41 +++ .../base/ndarray/cindex-of-falsy/lib/index.js | 18 +- .../base/ndarray/cindex-of-falsy/lib/main.js | 2 +- .../ndarray/cindex-of-falsy/lib/native.js | 68 ++++ .../ndarray/cindex-of-falsy/manifest.json | 118 +++++++ .../base/ndarray/cindex-of-falsy/package.json | 4 + .../base/ndarray/cindex-of-falsy/src/Makefile | 70 ++++ .../base/ndarray/cindex-of-falsy/src/addon.c | 67 ++++ .../base/ndarray/cindex-of-falsy/src/main.c | 63 ++++ .../base/ndarray/cindex-of-falsy/test/test.js | 278 ++-------------- .../ndarray/cindex-of-falsy/test/test.main.js | 303 +++++++++++++++++ .../cindex-of-falsy/test/test.native.js | 312 ++++++++++++++++++ 25 files changed, 2193 insertions(+), 265 deletions(-) create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/benchmark/benchmark.native.js create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/benchmark/c/Makefile create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/benchmark/c/benchmark.length.c create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/binding.gyp create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/examples/c/Makefile create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/examples/c/example.c create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/include.gypi create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/include/stdlib/blas/ext/base/ndarray/cindex_of_falsy.h create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/lib/native.js create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/manifest.json create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/src/Makefile create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/src/addon.c create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/src/main.c create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/test/test.main.js create mode 100644 lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/test/test.native.js diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/README.md b/lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/README.md index 4f94fff07bd8..e80de64eddb3 100644 --- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/README.md +++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/cindex-of-falsy/README.md @@ -47,7 +47,7 @@ var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' ); var x = new Complex64Vector( [ 1.0, 2.0, 0.0, 0.0, 3.0, 0.0, 2.0, 0.0 ] ); var fromIndex = scalar2ndarray( 0, { - 'dtype': 'generic' + 'dtype': 'int32' }); var idx = cindexOfFalsy( [ x, fromIndex ] ); @@ -70,7 +70,7 @@ var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' ); var x = new Complex64Vector( [ 1.0, 2.0, 3.0, 4.0 ] ); var fromIndex = scalar2ndarray( 0, { - 'dtype': 'generic' + 'dtype': 'int32' }); var idx = cindexOfFalsy( [ x, fromIndex ] ); @@ -114,7 +114,7 @@ var x = new Complex64Vector( bernoulli( 20, 0.7, opts ) ); console.log( ndarray2array( x ) ); var fromIndex = scalar2ndarray( 0, { - 'dtype': 'generic' + 'dtype': 'int32' }); var idx = cindexOfFalsy( [ x, fromIndex ] ); @@ -125,6 +125,181 @@ console.log( idx ); + + +* * * + +
+ +## C APIs + + + +
+ +
+ + + + + +
+ +### Usage + +```c +#include "stdlib/blas/ext/base/ndarray/cindex_of_falsy.h" +``` + +#### stdlib_blas_ext_cindex_of_falsy( arrays ) + +Returns the index of the first falsy element in a one-dimensional single-precision complex floating-point ndarray. + +```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 "stdlib/blas/base/shared.h" +#include + +// Create an input ndarray: +const float data[] = { 1.0f, 2.0f, 0.0f, 0.0f, 3.0f, 0.0f, 2.0f, 0.0f }; +int64_t shape[] = { 4 }; +int64_t strides[] = { STDLIB_NDARRAY_COMPLEX64_BYTES_PER_ELEMENT }; +int8_t submodes[] = { STDLIB_NDARRAY_INDEX_ERROR }; + +struct ndarray *x = stdlib_ndarray_allocate( STDLIB_NDARRAY_COMPLEX64, (uint8_t *)data, 1, shape, strides, 0, STDLIB_NDARRAY_ROW_MAJOR, STDLIB_NDARRAY_INDEX_ERROR, 1, submodes ); + +// Create a zero-dimensional ndarray containing the index from which to begin searching: +const int32_t fdata[] = { 0 }; +int64_t sstrides[] = { 0 }; + +struct ndarray *fromIndex = stdlib_ndarray_allocate( STDLIB_NDARRAY_INT32, (uint8_t *)fdata, 0, NULL, sstrides, 0, STDLIB_NDARRAY_ROW_MAJOR, STDLIB_NDARRAY_INDEX_ERROR, 1, submodes ); + +// Resolve the index: +const struct ndarray *arrays[] = { x, fromIndex }; +CBLAS_INT idx = stdlib_blas_ext_cindex_of_falsy( arrays ); +// returns 1 + +// Free allocated memory: +stdlib_ndarray_free( x ); +stdlib_ndarray_free( fromIndex ); +``` + +The function accepts the following arguments: + +- **arrays**: `[in] struct ndarray**` list containing the following ndarrays: + + - a one-dimensional input ndarray. + - a zero-dimensional ndarray containing the index from which to begin searching. + +```c +CBLAS_INT stdlib_blas_ext_cindex_of_falsy( const struct ndarray *arrays[] ); +``` + +
+ + + + + +
+ +- The zero-dimensional ndarray containing the index from which to begin searching must have an `int32` data type. + +
+ + + + + +
+ +### Examples + +```c +#include "stdlib/blas/ext/base/ndarray/cindex_of_falsy.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 "stdlib/blas/base/shared.h" +#include +#include +#include + +int main( void ) { + // Create a data buffer: + const float data[] = { 1.0f, -2.0f, 0.0f, 0.0f, 5.0f, -6.0f, 7.0f, -8.0f }; + + // 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 strides[] = { STDLIB_NDARRAY_COMPLEX64_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 an input ndarray: + struct ndarray *x = stdlib_ndarray_allocate( STDLIB_NDARRAY_COMPLEX64, (uint8_t *)data, ndims, shape, strides, offset, order, imode, nsubmodes, submodes ); + if ( x == NULL ) { + fprintf( stderr, "Error allocating memory.\n" ); + exit( 1 ); + } + + // Specify the array strides for zero-dimensional ndarrays: + int64_t sstrides[] = { 0 }; + + // Create a data buffer for an ndarray containing the index from which to begin searching: + const int32_t fdata[] = { 0 }; + + // Create a zero-dimensional ndarray containing the index from which to begin searching: + struct ndarray *fromIndex = stdlib_ndarray_allocate( STDLIB_NDARRAY_INT32, (uint8_t *)fdata, 0, NULL, sstrides, 0, order, imode, nsubmodes, submodes ); + if ( fromIndex == NULL ) { + fprintf( stderr, "Error allocating memory.\n" ); + exit( 1 ); + } + + // Define a list of ndarrays: + const struct ndarray *arrays[] = { x, fromIndex }; + + // Resolve the index: + CBLAS_INT idx = stdlib_blas_ext_cindex_of_falsy( arrays ); + + // Print the result: + printf( "index: %i\n", (int)idx ); + + // Free allocated memory: + stdlib_ndarray_free( x ); + stdlib_ndarray_free( fromIndex ); +} +``` + +
+ + + +
+ + +