Dissect floating-point numbers into base 2 exponent and mantissa (original) (raw)

Scilab 5.3.3

• Scilab help
• Elementary Functions
• Floating point
• ceil
• double
• fix
• floor
• frexp
• int
• isinf
• isnan
• nearfloat
• nextpow2
• number_properties
• round

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Scilab help >> Elementary Functions > Floating point > frexp

frexp

dissect floating-point numbers into base 2 exponent and mantissa

Calling Sequence

Arguments

x

real vector or matrix

f

array of real values, usually in the range 0.5 <= abs(f) < 1.

e

array of integers that satisfy the equation: x = f.*2.^e

Description

This function corresponds to the ANSI C function frexp(). Any zeros in x produce f=0 ande=0.

Examples

[f,e]=frexp([1,%pi,-3,%eps])

See Also

• log — natural logarithm
• hat — (^) exponentiation
• ieee — set floating point exception mode
• log2 — base 2 logarithm