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cppcoder

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02-03-2011
01:28 PM

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Exponent range in the Intel Decimal Floating-Point Math Library

Thanks in advance

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Om_S_Intel

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02-04-2011
01:33 AM

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timintel

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02-05-2011
05:04 AM

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Are you saying that the decimal library uses an 8-bit binary exponent for all 3 decimal floating point types?

tydeman

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02-05-2011
06:34 AM

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http://www.open-std.org/jtc1/sc22/wg14/www/documents

and look at the paper:

N1107 07-Mar-2005 Kwok, Decimal-floating point TR document rev 5

you will find a table of the minimum and maximum exponents for

each of the three decimal floating-point types. There also are macros

for the minimum and maximum exponent:

`minimum exponent``maximum exponent`

`DEC32_MIN_EXP -95`

`DEC64_MIN_EXP -383`

`DEC128_MIN_EXP -6143`

`DEC32_MAX_EXP 96`

`DEC64_MAX_EXP 384`

`DEC128_MAX_EXP 6144`

For more complete information about compiler optimizations, see our Optimization Notice.