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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| <?php | ||
| namespace Rindow\Math\Buffer\FFI; | ||
|
|
||
| use FFI; | ||
| use InvalidArgumentException; | ||
| use Interop\Polite\Math\Matrix\NDArray; | ||
|
|
||
| class BufferNoHeader extends Buffer | ||
| { | ||
| public function __construct(int $size, int $dtype) | ||
| { | ||
| if(parent::$ffi===null) { | ||
| parent::$ffi = FFI::cdef(''); | ||
| } | ||
| if(!isset(parent::$typeString[$dtype])) { | ||
| throw new InvalidArgumentException("Invalid data type"); | ||
| } | ||
| $limitsize = intdiv(parent::MAX_BYTES,parent::$valueSize[$dtype]); | ||
| if($size>=$limitsize) { | ||
| throw new InvalidArgumentException("Data size is too large."); | ||
| } | ||
| $this->size = $size; | ||
| $this->dtype = $dtype; | ||
| switch($dtype) { | ||
| case NDArray::complex64: { | ||
| $declaration = parent::$typeString[NDArray::float32]; | ||
| $size *= 2; | ||
| break; | ||
| } | ||
| case NDArray::complex128: { | ||
| $declaration = parent::$typeString[NDArray::float64]; | ||
| $size *= 2; | ||
| break; | ||
| } | ||
| default: { | ||
| $declaration = parent::$typeString[$dtype]; | ||
| break; | ||
| } | ||
| } | ||
| $this->data = parent::$ffi->new("{$declaration}[{$size}]"); | ||
| } | ||
|
|
||
| public function addr(int $offset) : FFI\CData | ||
| { | ||
| if($this->isComplex()) { | ||
| $offset *= 2; | ||
| } | ||
| return FFI::addr($this->data[$offset]); | ||
| } | ||
|
|
||
| public function offsetGet(mixed $offset): mixed | ||
| { | ||
| $this->assertOffset('offsetGet',$offset); | ||
| if($this->isComplex()) { | ||
| $offset *= 2; | ||
| $real = $this->data[$offset]; | ||
| $imag = $this->data[$offset+1]; | ||
| $value = (object)['real'=>$real,'imag'=>$imag]; | ||
| } else { | ||
| $value = $this->data[$offset]; | ||
| } | ||
| if($this->dtype===NDArray::bool) { | ||
| $value = $value ? true : false; | ||
| } | ||
| return $value; | ||
| } | ||
|
|
||
| public function offsetSet(mixed $offset, mixed $value): void | ||
| { | ||
| $this->assertOffset('offsetSet',$offset); | ||
| if($this->isComplex()) { | ||
| if(is_array($value)) { | ||
| [$real,$imag] = $value; | ||
| } elseif(is_object($value)) { | ||
| $real = $value->real; | ||
| $imag = $value->imag; | ||
| } else { | ||
| $type = gettype($value); | ||
| throw new InvalidArgumentException("Cannot convert to complex number.: ".$type); | ||
| } | ||
| $offset *= 2; | ||
| $this->data[$offset] = $real; | ||
| $this->data[$offset+1] = $imag; | ||
| } else { | ||
| $this->data[$offset] = $value; | ||
| } | ||
| } | ||
| } |
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