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-'\"
-'\" Copyright (c) 2018 Kevin B. Kenny <kennykb@acm.org>. All rights reserved
-'\" Copyright (c) 2019 Donal Fellows
-'\"
-'\" See the file "license.terms" for information on usage and redistribution
-'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
-.TH fpclassify n 8.7 Tcl "Tcl Float Classifier"
-.so man.macros
-.BS
-'\" Note:  do not modify the .SH NAME line immediately below!
-.SH NAME
-fpclassify \- Floating point number classification of Tcl values
-.SH SYNOPSIS
-package require \fBtcl 8.7\fR
-.sp
-\fBfpclassify \fIvalue\fR
-.BE
-.SH DESCRIPTION
-The \fBfpclassify\fR command takes a floating point number, \fIvalue\fR, and
-returns one of the following strings that describe it:
-.TP
-\fBzero\fR
-.
-\fIvalue\fR is a floating point zero.
-.TP
-\fBsubnormal\fR
-.
-\fIvalue\fR is the result of a gradual underflow.
-.TP
-\fBnormal\fR
-.
-\fIvalue\fR is an ordinary floating-point number (not zero, subnormal,
-infinite, nor NaN).
-.TP
-\fBinfinite\fR
-.
-\fIvalue\fR is a floating-point infinity.
-.TP
-\fBnan\fR
-.
-\fIvalue\fR is Not-a-Number.
-.PP
-The \fBfpclassify\fR command throws an error if value is not a floating-point
-value and cannot be converted to one.
-.SH EXAMPLE
-.PP
-This shows how to check whether the result of a computation is numerically
-safe or not. (Note however that it does not guard against numerical errors;
-just against representational problems.)
-.PP
-.CS
-set value [command-that-computes-a-value]
-switch [\fBfpclassify\fR $value] {
-    normal - zero {
-        puts "Result is $value"
-    }
-    infinite {
-        puts "Result is infinite"
-    }
-    subnormal {
-        puts "Result is $value - WARNING! precision lost"
-    }
-    nan {
-        puts "Computation completely failed"
-    }
-}
-.CE
-.SH "SEE ALSO"
-expr(n), mathfunc(n)
-.SH KEYWORDS
-floating point
-.SH STANDARDS
-This command depends on the \fBfpclassify\fR() C macro conforming to
-.QW "ISO C99"
-(i.e., to ISO/IEC 9899:1999).
-.SH COPYRIGHT
-.nf
-Copyright \(co 2018 by Kevin B. Kenny <kennykb@acm.org>. All rights reserved
-.fi
-'\" Local Variables:
-'\" mode: nroff
-'\" End: