home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Cream of the Crop 26
/
Cream of the Crop 26.iso
/
os2
/
octa209s.zip
/
octave-2.09
/
libs
/
f2c
/
libf77
/
pow_ii.c
< prev
next >
Wrap
C/C++ Source or Header
|
1994-05-06
|
426b
|
32 lines
#include "f2c.h"
#ifdef KR_headers
integer pow_ii(ap, bp) integer *ap, *bp;
#else
integer pow_ii(integer *ap, integer *bp)
#endif
{
integer pow, x, n;
x = *ap;
n = *bp;
if (n <= 0) {
if (n == 0 || x == 1)
return 1;
if (x != -1)
return x == 0 ? 1/x : 0;
n = -n;
}
for(pow = 1; ; )
{
if(n & 01)
pow *= x;
if(n >>= 1)
x *= x;
else
break;
}
return(pow);
}