C API for registering an N-API module exporting a strided array interface for applying a unary callback accepting and returning double-precision floating-point numbers to each element in a double-precision floating-point strided input array according to a corresponding element in a strided mask array and assigning results to elements in a double-precision floating-point strided output array.
APACHE-2.0 License
C API for registering a Node-API module exporting a strided array interface for applying a unary callback to a double-precision floating-point strided input array according to a strided mask array and assigning results to a double-precision floating-point strided output array.
npm install @stdlib/strided-napi-dmskmap
var headerDir = require( '@stdlib/strided-napi-dmskmap' );
Absolute file path for the directory containing header files for C APIs.
var dir = headerDir;
// returns <string>
var headerDir = require( '@stdlib/strided-napi-dmskmap' );
console.log( headerDir );
// => <string>
#include "stdlib/strided/napi/dmskmap.h"
Invokes a strided array interface which applies a unary callback to a double-precision floating-point strided input array according to a strided mask array and assigns results to a double-precision floating-point strided output array.
#include <node_api.h>
// ...
static double identity( const double x ) {
return x;
}
// ...
/**
* Receives JavaScript callback invocation data.
*
* @param env environment under which the function is invoked
* @param info callback data
* @return Node-API value
*/
napi_value addon( napi_env env, napi_callback_info info ) {
stdlib_strided_napi_dmskmap( env, info, identity );
return NULL;
}
// ...
The function accepts the following arguments:
[in] napi_env
environment under which the function is invoked.[in] napi_callback_info
callback data.[in] double (*fcn)( double )
unary callback.void stdlib_strided_napi_dmskmap( napi_env env, napi_callback_info info, double (*fcn)( double ) );
Macro for registering a Node-API module exporting a strided array interface for applying a unary callback to a double-precision floating-point strided input array according to a strided mask array and assigning results to a double-precision floating-point strided output array.
static double scale( const double x ) {
return x * 10.0;
}
// ...
// Register a Node-API module:
STDLIB_STRIDED_NAPI_MODULE_DMSKMAP( scale );
The macro expects the following arguments:
double (*fcn)( double )
unary callback.When used, this macro should be used instead of NAPI_MODULE
. The macro includes NAPI_MODULE
, thus ensuring Node-API module registration.
The function expects that the callback info
argument provides access to the following JavaScript arguments:
Float64Array
.X
stride length.Uint8Array
.Mask
stride length.Float64Array
.Y
stride length.This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
See LICENSE.
Copyright © 2016-2024. The Stdlib Authors.