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  2. Quadruple-precision floating-point format - Wikipedia

    en.wikipedia.org/wiki/Quadruple-precision...

    The NEC Vector Engine architecture supports adding, subtracting, multiplying and comparing 128-bit binary IEEE 754 quadruple-precision numbers. [40] Two neighboring 64-bit registers are used. Quadruple-precision arithmetic is not supported in the vector register.

  3. IEEE 754 - Wikipedia

    en.wikipedia.org/wiki/IEEE_754

    128-bit: Quadruple (binary128), decimal128; ... The encoding scheme for these binary interchange formats is the same as that of IEEE 754-1985: a sign bit, ...

  4. decimal128 floating-point format - Wikipedia

    en.wikipedia.org/wiki/Decimal128_floating-point...

    IEEE 754; 16-bit: Half (binary16) 32-bit: Single (binary32), ... In computing, decimal128 is a decimal floating-point number format that occupies 128 bits in memory.

  5. Extended precision - Wikipedia

    en.wikipedia.org/wiki/Extended_precision

    That kind of gradual evolution towards wider precision was already in view when IEEE Standard 754 for Floating-Point Arithmetic was framed." [19] This 80-bit format uses one bit for the sign of the significand, 15 bits for the exponent field (i.e. the same range as the 128-bit quadruple precision IEEE 754 format) and

  6. IEEE 754-1985 - Wikipedia

    en.wikipedia.org/wiki/IEEE_754-1985

    IEEE 754-1985 [1] is a historic ... 128 2 ≈ 3.999999761581 ≈ 2.38419e-7 ... Every possible bit combination is either a NaN or a number with a unique value in the ...

  7. IEEE 754-2008 revision - Wikipedia

    en.wikipedia.org/wiki/IEEE_754-2008_revision

    IEEE 754-2008 (previously known as ... The most obvious enhancements to the standard are the addition of a 16-bit and a 128-bit binary type and three decimal types ...

  8. Decimal floating point - Wikipedia

    en.wikipedia.org/wiki/Decimal_floating_point

    The IEEE 754-2008 standard defines 32-, 64- and 128-bit decimal floating-point representations. Like the binary floating-point formats, the number is divided into a sign, an exponent, and a significand.

  9. Floating-point arithmetic - Wikipedia

    en.wikipedia.org/wiki/Floating-point_arithmetic

    128-bit: Quadruple (binary128), decimal128; 256-bit: Octuple (binary256) ... while inputs and outputs should be stored in the 32-bit single-precision IEEE 754 format. ...