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

.TH ASSERT 3X "19 January 1983"
.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
05dda90f C	1	.TH ASSERT 3X "19 January 1983"
	2	.SH NAME
	3	assert \- program verification
	4	.SH SYNOPSIS
	5	.B #include <assert.h>
	6	.PP
	7	.B assert(expression)
	8	.SH DESCRIPTION
	9	.PP
	10	.I Assert
	11	is a macro that indicates
	12	.I expression
	13	is expected to be true at this point in the program.
	14	It causes an
	15	.IR exit (2)
	16	with a diagnostic comment on the standard output when
	17	.I expression
	18	is false (0).
	19	Compiling with the
	20	.IR cc (1)
	21	option
	22	.SM
	23	.B \-DNDEBUG
	24	effectively deletes
	25	.I assert
	26	from the program.
	27	.SH DIAGNOSTICS
	28	`Assertion failed: file
	29	.I f
	30	line
	31	.I n.'
	32	.I F
	33	is the source file and
	34	.I n
	35	the source line number of the
	36	.I assert
	37	statement.