.\" This file is part of the Public Domain C Library (PDCLib).
.\" Permission is granted to use, modify, and / or redistribute at will.
.\"
.Dd
.Dt ASSERT.H 3
.Os
.\"
.Sh NAME
.Nm assert.h
.Nd verify program assertion
.\"
.Sh SYNOPSIS
.In assert.h
.\"
.Sh DESCRIPTION
The header
.In assert.h
shall define one macro:
.Dv assert(<scalar expression>) .
.Pp
If
.Dv NDEBUG
was undefined at the most recent inclusion of this header, then it shall be
defined as a macro which will evaluate the scalar expression and, if it is
false, abort the program with a descriptive error message as defined in
.Xr assert 3 .
.\"
.Pp
If
.Dv NDEBUG
was defined at the most recent inclusion of this header, then it shall be
defined as a macro which evaluates as a void expression and
.Sy does not
evaluate its parameter.
.\"
.Sh STANDARDS
Conforming to
.St -isoC-90 ,
.St -isoC-99 .