[unix-history] / usr / man / man3 / assert.3x

.TH ASSERT 3X
.SH NAME
assert \-
program verification
.SH SYNOPSIS
.B #include <assert.h>
.PP
.B assert (expression)
.SH DESCRIPTION
.PP
.I Assert
is a macro that indicates
.I expression
is expected to be true at this point in the program.
It causes an
.IR exit (2)
with a diagnostic comment on the standard output
when
.I expression
is false (0).
Compiling with the 
.IR cc (1)
option
.SM
.B \-DNDEBUG
effectively deletes
.I assert
from the program.
.SH DIAGNOSTICS
`Assertion failed: file
.I f
line
.I n.'
.I F
is the source file and
.I n
the source line number
of the
.I assert
statement.
Commit	Line	Data
4ae006aa DR	1	.TH ASSERT 3X
	2	.SH NAME
	3	assert \-
	4	program verification
	5	.SH SYNOPSIS
	6	.B #include <assert.h>
	7	.PP
	8	.B assert (expression)
	9	.SH DESCRIPTION
	10	.PP
	11	.I Assert
	12	is a macro that indicates
	13	.I expression
	14	is expected to be true at this point in the program.
	15	It causes an
	16	.IR exit (2)
	17	with a diagnostic comment on the standard output
	18	when
	19	.I expression
	20	is false (0).
	21	Compiling with the
	22	.IR cc (1)
	23	option
	24	.SM
	25	.B \-DNDEBUG
	26	effectively deletes
	27	.I assert
	28	from the program.
	29	.SH DIAGNOSTICS
	30	`Assertion failed: file
	31	.I f
	32	line
	33	.I n.'
	34	.I F
	35	is the source file and
	36	.I n
	37	the source line number
	38	of the
	39	.I assert
	40	statement.