C APIs for registering an N-API module exporting interfaces for invoking binary numerical functions.
var headerDir = require( '@stdlib/math/base/napi/binary' );Absolute file path for the directory containing header files for C APIs.
var dir = headerDir;
// returns <string>var headerDir = require( '@stdlib/math/base/napi/binary' );
console.log( headerDir );
// => <string>#include "stdlib/math/base/napi/binary.h"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_envenvironment under which the function is invoked. - info:
[in] napi_callback_infocallback 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 ) );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_envenvironment under which the function is invoked. - info:
[in] napi_callback_infocallback 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 ) );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.
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.
-
The C-API functions expect that the callback
infoargument provides access to the following JavaScript arguments:x: input value.y: input value.