SYNOPSIS

DESCRIPTION

EXAMPLE

BUGS

AUTHOR

SEE ALSO

total - sum up columns

**total** [
**−m** ][ **−sE** | **−p** |
**−u** | **−l** ][ **−i{f|d}[N]**
][ **−o{f|d}** ][ **−tC** ][
**−N** [ **−r** ]] [ file .. ]

*Total*
sums up columns of real numbers from one or more files and
prints out the result on its standard output.

By default,
*total* computes the straigt sum of each input column,
but multiplication can be specified instead with the
*−p* option. Likewise, the *−u* option
means find the upper limit (maximum), and *−l*
means find the lower limit (minimum).

Sums of powers
can be computed by giving an exponent with the
*−s* option. (Note that there is no space between
the *−s* and the exponent.) This exponent can be
any real number, positive or negative. The absolute value of
the input is always taken before the power is computed in
order to avoid complex results. Thus, *−s1* will
produce a sum of absolute values. The default power (zero)
is interpreted as a straight sum without taking absolute
values.

The
*−m* option can be used to compute the mean
rather than the total. For sums, the arithmetic mean is
computed. For products, the geometric mean is computed. (A
logarithmic sum of absolute values is used to avoid
overflow, and zero values are silently ignored.)

If the input
data is binary, the *−id* or *−if*
option may be given for 64-bit double or 32-bit float
values, respectively. Either option may be followed
immediately by an optional count, which defaults to 1,
indicating the number of double or float binary values to
read per record on the input file. (There can be no space
between the option and this count.) Similarly, the
*−od* and *−of* options specify binary
double or float output, respectively. These options do not
need a count, as this will be determined by the number of
input channels.

A count can be
given as the number of lines to read before computing a
result. Normally, *total* reads each file to its end
before producing its result, but this behavior may be
overridden by inserting blank lines in the input. For each
blank input line, total produces a result as if the
end-of-file had been reached. If two blank lines immediately
follow each other, total closes the file and proceeds to the
next one (after reporting the result). The *−N*
option (where N is a decimal integer) tells *total* to
produce a result and reset the calculation after every N
input lines. In addition, the *−r* option can be
specified to override reinitialization and thus give a
running total every N lines (or every blank line). If the
end of file is reached, the current total is printed and the
calculation is reset before the next file (with or without
the *−r* option).

The
*−tC* option can be used to specify the input and
output tab character. The default tab character is TAB.

If no files are given, the standard input is read.

To compute the RMS value of colon-separated columns in a file:

total −t: −m −s2 input |

To produce a running product of values from a file:

total −p −1 −r input |

If the input
files have varying numbers of columns, mean values will
certainly be off. *Total* will ignore missing column
entries if the tab separator is a non-white character, but
cannot tell where a missing column should have been if the
tab character is white.

Greg Ward

cnt(1), neaten(1), rcalc(1), rlam(1), tabfunc(1)