@stdlib/math-base-napi-binary

binary

C APIs for registering an N-API module exporting interfaces for invoking binary numerical functions.

Installation

npm install @stdlib/math-base-napi-binary

Usage

var headerDir = require( '@stdlib/math-base-napi-binary' );

headerDir

Absolute file path for the directory containing header files for C APIs.

var dir = headerDir;
// returns <string>

Examples

var headerDir = require( '@stdlib/math-base-napi-binary' );

console.log( headerDir );
// => <string>

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C APIs

Installation

npm install @stdlib/math-base-napi-binary

Usage

#include "stdlib/math/base/napi/binary.h"

stdlib_math_base_napi_dd_d( env, info, fcn )

Invokes a binary function accepting and returning double-precision floating-point numbers.

#include <node_api.h>

// ...

static double add( const double x, const double y ) {
    return x + y;
}

// ...

/**
* Receives JavaScript callback invocation data via N-API.
*
* @param env    environment under which the function is invoked
* @param info   callback data
* @return       N-API value
*/
napi_value addon( napi_env env, napi_callback_info info ) {
    return stdlib_math_base_napi_dd_d( env, info, add );
}

// ...

The function accepts the following arguments:

• env: [in] napi_env environment under which the function is invoked.
• info: [in] napi_callback_info callback data.
• fcn: [in] double (*fcn)( double, double ) binary function.

void stdlib_math_base_napi_dd_d( napi_env env, napi_callback_info info, double (*fcn)( double, double ) );

stdlib_math_base_napi_ff_f( env, info, fcn )

Invokes a binary function accepting and returning single-precision floating-point numbers.

#include <node_api.h>

// ...

static float addf( const float x, const float y ) {
    return x + y;
}

// ...

/**
* Receives JavaScript callback invocation data via N-API.
*
* @param env    environment under which the function is invoked
* @param info   callback data
* @return       N-API value
*/
napi_value addon( napi_env env, napi_callback_info info ) {
    return stdlib_math_base_napi_ff_f( env, info, addf );
}

// ...

The function accepts the following arguments:

• env: [in] napi_env environment under which the function is invoked.
• info: [in] napi_callback_info callback data.
• fcn: [in] float (*fcn)( float, float ) binary function.

void stdlib_math_base_napi_ff_f( napi_env env, napi_callback_info info, float (*fcn)( float, float ) );

STDLIB_MATH_BASE_NAPI_MODULE_DD_D( fcn )

Macro for registering an N-API module exporting an interface for invoking a binary function accepting and returning double-precision floating-point numbers.

static double add( const double x, const double y ) {
    return x + y;
}

// ...

// Register an N-API module:
STDLIB_MATH_BASE_NAPI_MODULE_DD_D( add );

The macro expects the following arguments:

• fcn: double (*fcn)( double, double ) binary function.

When used, this macro should be used instead of NAPI_MODULE. The macro includes NAPI_MODULE, thus ensuring N-API module registration.

STDLIB_MATH_BASE_NAPI_MODULE_FF_F( fcn )

Macro for registering an N-API module exporting an interface for invoking a binary function accepting and returning single-precision floating-point numbers.

static float addf( const float x, const float y ) {
    return x + y;
}

// ...

// Register an N-API module:
STDLIB_MATH_BASE_NAPI_MODULE_FF_F( addf );

The macro expects the following arguments:

• fcn: float (*fcn)( float, float ) binary function.

When used, this macro should be used instead of NAPI_MODULE. The macro includes NAPI_MODULE, thus ensuring N-API module registration.

Notes

• The C-API functions expect that the callback info argument provides access to the following JavaScript arguments:

  • x: input value.
  • y: input value.

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Notice

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.

Community

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License

See LICENSE.

Copyright

Copyright © 2016-2021. The Stdlib Authors.