div.3

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· 3 代码 · 共 51 行

.\" SCCSID: 9/11/90 div.3
.TH div 3
.SH Name
div, ldiv \- integer division
.SH Syntax
.nf
.B #include <stdlib.h>
.PP
.B div_t div(\fInumer, denom\fP)
.B int \fInumer\fP;
.B int \fIdenom\fP;
.PP
.B ldiv_t ldiv(\fInumer, denom\fP)
.B long \fInumer\fP;
.B long \fIdenom\fP;
.fi
.SH Description
.NXR "div subroutine (ANSI C)"
.NXR "ldiv subroutine (ANSI C)"
The
.PN div
and
.PN ldiv
functions return the quotient and remainder of the division of the
numerator
.I numer
by the denominator
.I denom.
.PP
The return types div_t and ldiv_t are defined, in stdlib.h, as follows:
.PP
.EX 5
typedef struct {
		int	quot;	/* quotient */
		int	rem;	/* remainder */
	}	div_t;		/* result of div() */

typedef struct {
		long	quot;	/* quotient */
		long	rem;	/* remainder */
	}	ldiv_t;		/* result of ldiv() */
.EE
.SH Restrictions
If division by zero is attempted, the behavior of 
.PN div 
and 
.PN ldiv 
is
undefined.