From 4a11f91e153fa4df1b277b08747745545b13c6fb Mon Sep 17 00:00:00 2001 From: kaustubh Date: Wed, 28 Jan 2026 20:29:00 +0530 Subject: [PATCH 1/4] feat: add C implementation for stats/base/ndarray/smax --- .../@stdlib/stats/base/ndarray/smax/README.md | 149 +++++++++++++- .../smax/benchmark/benchmark.native.js | 114 +++++++++++ .../base/ndarray/smax/benchmark/c/Makefile | 146 ++++++++++++++ .../smax/benchmark/c/benchmark.length.c | 185 ++++++++++++++++++ .../stats/base/ndarray/smax/binding.gyp | 170 ++++++++++++++++ .../base/ndarray/smax/examples/c/Makefile | 146 ++++++++++++++ .../base/ndarray/smax/examples/c/example.c | 74 +++++++ .../stats/base/ndarray/smax/include.gypi | 53 +++++ .../include/stdlib/stats/base/ndarray/smax.h | 40 ++++ .../stats/base/ndarray/smax/lib/native.js | 55 ++++++ .../stats/base/ndarray/smax/manifest.json | 110 +++++++++++ .../stats/base/ndarray/smax/package.json | 3 + .../stats/base/ndarray/smax/src/Makefile | 70 +++++++ .../stats/base/ndarray/smax/src/addon.c | 58 ++++++ .../stats/base/ndarray/smax/src/main.c | 33 ++++ .../base/ndarray/smax/test/test.native.js | 182 +++++++++++++++++ 16 files changed, 1587 insertions(+), 1 deletion(-) create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/benchmark/benchmark.native.js create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/benchmark/c/Makefile create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/benchmark/c/benchmark.length.c create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/binding.gyp create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/examples/c/Makefile create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/examples/c/example.c create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/include.gypi create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/include/stdlib/stats/base/ndarray/smax.h create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/lib/native.js create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/manifest.json create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/src/Makefile create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/src/addon.c create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/src/main.c create mode 100644 lib/node_modules/@stdlib/stats/base/ndarray/smax/test/test.native.js diff --git a/lib/node_modules/@stdlib/stats/base/ndarray/smax/README.md b/lib/node_modules/@stdlib/stats/base/ndarray/smax/README.md index 816be5acd0ec..7ec00fa131f9 100644 --- a/lib/node_modules/@stdlib/stats/base/ndarray/smax/README.md +++ b/lib/node_modules/@stdlib/stats/base/ndarray/smax/README.md @@ -2,7 +2,7 @@ @license Apache-2.0 -Copyright (c) 2025 The Stdlib Authors. +Copyright (c) 2026 The Stdlib Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. @@ -95,6 +95,153 @@ console.log( v ); + + +* * * + +
+ +## C APIs + + + +
+ +
+ + + + + +
+ +### Usage + +```c +#include "stdlib/stats/base/ndarray/smax.h" +``` + +#### stdlib_stats_smax( arrays ) + +Computes the maximum value of a one-dimensional single-precision 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 + +// Create an ndarray: +const float data[] = { 1.0f, 2.0f, 3.0f, 4.0f }; +int64_t shape[] = { 4 }; +int64_t strides[] = { STDLIB_NDARRAY_FLOAT32_BYTES_PER_ELEMENT }; +int8_t submodes[] = { STDLIB_NDARRAY_INDEX_ERROR }; + +struct ndarray *x = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)data, 1, shape, strides, 0, STDLIB_NDARRAY_ROW_MAJOR, STDLIB_NDARRAY_INDEX_ERROR, 1, submodes ); + +// Compute the maximum value: +const struct ndarray *arrays[] = { x }; +float v = stdlib_stats_smax( arrays ); +// returns 4.0 + +// Free allocated memory: +stdlib_ndarray_free( x ); +``` + +The function accepts the following arguments: + +- **arrays**: `[in] struct ndarray**` list containing a one-dimensional input ndarray. + +```c +float stdlib_stats_smax( const struct ndarray *arrays[] ); +``` + +
+ + + + + +
+ +
+ + + + + +
+ +### Examples + +```c +#include "stdlib/stats/base/ndarray/smax.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 + +int main( void ) { + // Create a data buffer: + const float data[] = { 1.0f, -2.0f, 3.0f, -4.0f, 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[] = { 2*STDLIB_NDARRAY_FLOAT32_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 ndarray: + struct ndarray *x = stdlib_ndarray_allocate( STDLIB_NDARRAY_FLOAT32, (uint8_t *)data, ndims, shape, strides, offset, order, imode, nsubmodes, submodes ); + if ( x == NULL ) { + fprintf( stderr, "Error allocating memory.\n" ); + exit( 1 ); + } + + // Define a list of ndarrays: + const struct ndarray *arrays[] = { x }; + + // Compute the maximum value: + float v = stdlib_stats_smax( arrays ); + + // Print the result: + printf( "max: %f\n", v ); + + // Free allocated memory: + stdlib_ndarray_free( x ); +} +``` + +
+ + + +
+ + +