.TH LOG10 1 "11 January 2000" "Utilities" "Utilities"
.SH NAME
log10 \- calculate common logarithms of two-column data
.SH SYNOPSIS
\fBlog10\fR
.SH DESCRIPTION
.PP
\fIlog10\fR reads its standard input, which should be in text form and
should contain two positive numbers (x and y) on each line, separated by
spaces or tabs.  The standard output of \fIlog10\fR contains four columns of
numbers, separated by spaces:  the common (base 10) logarithms of x and y, and
the x and y values.  To avoid underflow, if any input is less than MINDOUBLE
(defined in \fI<values.h>\fR as the smallest positive value that can be
represented as a double-precision floating point quantity), it is replaced by
that value.
.SH AUTHOR
George B. Moody (george@mit.edu)
.SH SOURCE
http://www.physionet.org/physiotools/wfdb/psd/log10.c
