Determine if a buffer length is compatible with provided ndarray meta data.
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> Determine if a buffer length is compatible with ndarray meta data.
``bash`
npm install @stdlib/ndarray-base-assert-is-buffer-length-compatible
`javascript`
var isBufferLengthCompatible = require( '@stdlib/ndarray-base-assert-is-buffer-length-compatible' );
#### isBufferLengthCompatible( len, shape, strides, offset )
Returns a boolean indicating if a buffer length is compatible with provided ndarray meta data.
`javascript
var shape = [ 2, 2 ];
var strides = [ 2, 1 ];
var offset = 25;
var bool = isBufferLengthCompatible( 30, shape, strides, offset );
// returns true
bool = isBufferLengthCompatible( 4, shape, strides, offset );
// returns false
`
`javascript
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' );
var shape2strides = require( '@stdlib/ndarray-base-shape2strides' );
var strides2offset = require( '@stdlib/ndarray-base-strides2offset' );
var randu = require( '@stdlib/random-base-randu' );
var isBufferLengthCompatible = require( '@stdlib/ndarray-base-assert-is-buffer-length-compatible' );
var strides;
var offset;
var shape;
var bool;
var len;
var i;
var j;
len = 500; // buffer length
shape = [ 0, 0, 0 ];
for ( i = 0; i < 100; i++ ) {
// Generate a random array shape:
shape[ 0 ] = discreteUniform( 1, 10 );
shape[ 1 ] = discreteUniform( 1, 10 );
shape[ 2 ] = discreteUniform( 1, 10 );
// Generate strides:
if ( randu() < 0.5 ) {
strides = shape2strides( shape, 'row-major' );
} else {
strides = shape2strides( shape, 'column-major' );
}
j = discreteUniform( 0, shape.length-1 );
strides[ j ] *= ( randu() < 0.5 ) ? -1 : 1;
// Compute the index offset:
offset = strides2offset( shape, strides ) + discreteUniform( 0, 200 );
// Determine if a buffer length is compatible with generated meta data:
bool = isBufferLengthCompatible( len, shape, strides, offset );
console.log( 'Buffer length: %d. Shape: %s. Strides: %s. Offset: %d. Compatible: %s.', len, shape.join( 'x' ), strides.join( ',' ), offset, bool );
}
`
*
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