IEEE Floating Point Standard

(standard, mathematics)(IEEE 754) "IEEE Standard for BinaryFloating-Point Arithmetic (ANSI/IEEE Std 754-1985)" or IEC559: "Binary floating-point arithmetic for microprocessorsystems". A standard, used by many CPUs and FPUs, whichdefines formats for representing floating-point numbers;representations of special values (e.g. infinity, very smallvalues, NaN); five exceptions, when they occur, and whathappens when they do occur; four rounding modes; and a setof floating-point operations that will work identically on anyconforming system.

IEEE 754 specifies formats for representing floating-pointvalues: single-precision (32-bit) is required,double-precision (64-bit) is optional. The standard alsomentions that some implementations may include single-extendedprecision (80-bit) and double-extended precision (128-bit)formats.

单词	ieee floating point standard
释义	IEEE Floating Point Standard IEEE Floating Point Standard (standard, mathematics)(IEEE 754) "IEEE Standard for BinaryFloating-Point Arithmetic (ANSI/IEEE Std 754-1985)" or IEC559: "Binary floating-point arithmetic for microprocessorsystems". A standard, used by many CPUs and FPUs, whichdefines formats for representing floating-point numbers;representations of special values (e.g. infinity, very smallvalues, NaN); five exceptions, when they occur, and whathappens when they do occur; four rounding modes; and a setof floating-point operations that will work identically on anyconforming system. IEEE 754 specifies formats for representing floating-pointvalues: single-precision (32-bit) is required,double-precision (64-bit) is optional. The standard alsomentions that some implementations may include single-extendedprecision (80-bit) and double-extended precision (128-bit)formats.
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