Abstract:
PROBLEM TO BE SOLVED: To provide a computer program for facilitating data collection in a virtual processing environment, a method to be executed by a computer, and a computer system. SOLUTION: In the computer program, a central processing unit measurement facility is virtualized in order to support concurrent use of the facility by multiple guests executing within the virtual environment. Each guest of the environment has independent control over disablement/enablement of the facility for that guest. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
A system and method for detecting decimal floating point data processing exceptions. A processor accepts at least one decimal floating point operand and performs a decimal floating point operation on the at least one decimal floating point operand to produce a decimal floating point result. A determination is made as to whether the decimal floating point result fails to maintain a preferred quantum. The preferred quantum indicates a value represented by a least significant digit of a significand of the decimal floating point result. An output is provided, in response to the determining that the decimal floating point result fails to maintain the preferred quantum, indicating an occurrence of a quantum exception. A maskable exception can be generated that is immediately trapped or later detected to control conditional processing.
Abstract:
23 DECIMAL FLOATING-POINT QUANTUM EXCEPTION DETECTION AbstractA system and method for detecting decimal floating point data processing exceptions. A processor accepts at least one decimal floating point operand and performs a decimal floating point operation on the at least one decimal floating point operand to produce a decimal floating point result. A determination is made as to whether the decimal floating point result fails to maintain a preferred quantum. The10 preferred quantum indicates a value represented by a least significant digit of a significand of the decimal floating point result. An output is provided, in response to the determining that the decimal floating point result fails to maintain the preferred quantum, indicating an occurrence of a quantum exception. A maskable exception can be generated that is immediately trapped or later detected to control conditional15 processing. Fig. 1
Abstract:
A system and method for detecting decimal floating point data processing exceptions. A processor accepts at least one decimal floating point operand and performs a decimal floating point operation on the at least one decimal floating point operand to produce a decimal floating point result. A determination is made as to whether the decimal floating point result fails to maintain a preferred quantum. The preferred quantum indicates a value represented by a least significant digit of a significand of the decimal floating point result. An output is provided, in response to the determining that the decimal floating point result fails to maintain the preferred quantum, indicating an occurrence of a quantum exception. A maskable exception can be generated that is immediately trapped or later detected to control conditional processing.
Abstract:
A system and method for detecting decimal floating point data processing exceptions. A processor accepts at least one decimal floating point operand and performs a decimal floating point operation on the at least one decimal floating point operand to produce a decimal floating point result. A determination is made as to whether the decimal floating point result fails to maintain a preferred quantum. The preferred quantum indicates a value represented by a least significant digit of a significand of the decimal floating point result. An output is provided, in response to the determining that the decimal floating point result fails to maintain the preferred quantum, indicating an occurrence of a quantum exception. A maskable exception can be generated that is immediately trapped or later detected to control conditional processing.
Abstract:
Un método para detectar excepciones cuánticas decimales de coma flotante, comprendiendo el método los pasos de aceptar al menos un operando decimal (102, 104) de coma flotante; obtener (202) una instrucción de máquina que contiene una instrucción para una operación decimal de coma flotante; y caracterizado por: ejecutar la instrucción de máquina que comprende: determinar (208) la cuantía preferida basada en al menos un operando decimal de coma flotante, indicando la cuantía preferida un valor definido representado por un dígito menos significativo de un significando del resultado decimal de coma flotante; realizar (210) una operación decimal de coma flotante en al menos un operando decimal de coma flotante para producir un resultado decimal de coma flotante; determinar, en respuesta a un campo de control en la instrucción de máquina, que la cuantía del resultado decimal de coma flotante es diferente de la cuantía preferida; y proporcionar, en respuesta al paso de determinar que la cuantía del resultado decimal de coma flotante es diferente de la cuantía preferida, una salida que indica una excepción cuántica, ocurriendo la excepción cuántica solamente en respuesta a la cuantía del resultado decimal de coma flotante que es diferente de la cuantía preferida.
Abstract:
A system and method for detecting decimal floating point data processing exceptions. A processor accepts at least one decimal floating point operand and performs a decimal floating point operation on the at least one decimal floating point operand to produce a decimal floating point result. A determination is made as to whether the decimal floating point result fails to maintain a preferred quantum. The preferred quantum indicates a value represented by a least significant digit of a significand of the decimal floating point result. An output is provided, in response to the determining that the decimal floating point result fails to maintain the preferred quantum, indicating an occurrence of a quantum exception. A maskable exception can be generated that is immediately trapped or later detected to control conditional processing.
Abstract:
A system and method for detecting decimal floating point data processing exceptions. A processor accepts at least one decimal floating point operand and performs a decimal floating point operation on the at least one decimal floating point operand to produce a decimal floating point result. A determination is made as to whether the decimal floating point result fails to maintain a preferred quantum. The preferred quantum indicates a value represented by a least significant digit of a significand of the decimal floating point result. An output is provided, in response to the determining that the decimal floating point result fails to maintain the preferred quantum, indicating an occurrence of a quantum exception. A maskable exception can be generated that is immediately trapped or later detected to control conditional processing.