NUMBER(8) NUMBER(8)
NAME
number - C compatable numbers for shell scripts
SYNOPSIS
aux/number [ -v ] [ -f fmt ] [ num... ]
DESCRIPTION
Number parses its argument as simple C expression containing
the operators `/', `*', `%', `+', `-', `&', `^', and `|' on
numbers parsed with strtoll (see atof(2)). Numbers may be
decorated with a binary scale `k', `m', `g', `t', `e', `z',
`y' using 1024 as a base. The result is printed as with
print(2). The default format is %lld; alternate formats can
be specified with -f. Formats are as in print(2). The spe-
cial format `«' prints the result as a sequence of left-
shifts and ors. The alternate format flag `#' combines
strings of 1s. The format `m' prints the exact result using
the same binary scale as above. The alternate format flag
`#' allows rounding. The format width changes the base from
1024. All operations are preformed in 64-bit signed arith-
metic.
EXAMPLE
Print out the number of 512-byte blocks in 1MB in hex
; aux/number -f '%#x' 1m/512
0x800
SOURCE
/sys/src/cmd/aux/number.c
SEE ALSO
dc(1), atof(2), getflags(8)
BUGS
Number is too fancy yet has no loops, functions, unsigned
arithmetic or arbitrary precicison.