@@@ much mess, mostly manpages

[mLib] / utils / maths.3

diff --git a/utils/maths.3 b/utils/maths.3
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--- a/utils/maths.3
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-.\" -*-nroff-*-
-.TH linreg 3 "9 March 2024" "Straylight/Edgeware" "mLib utilities library"
-.\" @NANPN
-.\" @INFP
-.\" @NEGP
-.
-.SH SYNOPSIS
-.nf
-.B "#include <mLib/maths.h>"
-.PP
-.BI "int NANP(" floatish " " x );
-.BI "int INFP(" floatish " " x );
-.BI "int NEGP(" floatish " " x );
-.fi
-.
-.SH DESCRIPTION
-The
-.B <mLib/maths.h>
-header declares some minor low-level floating-point utilities.
-These are mostly redundant with C99,
-but provided for portability to older platforms.
-.PP
-The
-.B NANP
-macro returns nonzero if its argument is not-a-number.
-The
-.B INFP
-macro returns nonzero if its argument is infinite.
-The
-.B NEGP
-macro returns nonzero if its argument is negative;
-on IEEE\ 754 platforms with sufficient support,
-it will correctly detect negative zero.
-.
-.SH AUTHOR
-Mark Wooding, <mdw@distorted.org.uk>