HH (version 3.1-19)

showHex: Show numbers in binary and hex format

Description

Show numbers in binary and hex format.

Usage

showHex(x, ...)
## hexdigits is the number of hex digits after the precision point
showBin(x, ..., shift=FALSE, LeftPad="_", RightPad="_")
## bindigits is number of binary digits after the precision point
## not exported
showHexInternal(x,
                bindigits=if (is(x, "mpfr"))
                   min(Rmpfr::.getPrec(x))
                else
                   Rmpfr::mpfr_default_prec(),
                hexdigits=1 + ((bindigits-1) %/% 4),
                ...)

Arguments

x

x

bindigits

Number of binary digits after the binary point.

hexdigits

Number of hexadecimal digits after the hexadeximal point.

shift

Logical. When FALSE (the default) the binary representation is displayed in scientific notation (3 is displayed as +0b1.1000p+1). When TRUE, the binary representation is in regulat format shifted to align bin

...

The specifications bindigits and hexdigits are the only optional arguments that will be used.

LeftPad, RightPad

Characters that will be used for left- and right-padding of the formatted string when shift=TRUE.

Value

• A character matrix containing the formatted represention of the argument. Arithmetic cannot be done on the result.

Details

For the hexadecimal representation, the function sprintf is used directly. For the binary representation, the hexadecimal value is calculated and then edited by substitution of the binary representation of the hex characters coded in the HextoBin vector.

References

R FAQ 7.31: Why doesn't R think these numbers are equal? system.file("../../doc/FAQ")

See Also

mpfr, sprintf

Examples

FourBits <- Rmpfr::mpfr(matrix(0:31, 8, 4), precBits=4) ## 4 significant bits
dimnames(FourBits) <- list(0:7, c(0,8,16,24))
FourBits

showHex(FourBits)
showBin(FourBits)
showBin(FourBits, shift=TRUE)

showBin(FourBits, bindigits=3) ## 3 digits after the binary point
showBin(FourBits, bindigits=3, shift=TRUE)

showHex(FourBits, bindigits=6)
showHex(FourBits, hexdigits=2)

showBin(FourBits, bindigits=6)
showBin(FourBits, shift=TRUE, bindigits=6)
showBin(FourBits, hexdigits=2)