ref: 3d55a193330e1da375d33d394275e56602e67d7e
dir: /lpc10/f2clib.c/
/*
$Log: f2clib.c,v $
Revision 1.2 2007/04/18 13:59:59 rrt
Remove $Log tokens and associated log messages (in many files, several
copies of every log message were being written) and lots of warnings.
Revision 1.1 2007/04/16 21:57:06 rrt
LPC-10 support, documentation still to come; I wanted to land the code
before 14.0.0 went into test, and I'll be busy tomorrow.
Not highly tested either, but it's just a format, doesn't interfere
with anything else, and I'll get on that case before we go stable.
* Revision 1.1 1996/08/19 22:32:10 jaf
* Initial revision
*
*/
/*
* f2clib.c
*
* SCCS ID: @(#)f2clib.c 1.2 96/05/19
*/
#include "f2c.h"
integer pow_ii(integer *ap, integer *bp);
integer pow_ii(integer *ap, integer *bp)
{
integer pow, x, n;
unsigned long u;
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;
}
u = n;
for(pow = 1; ; )
{
if(u & 01)
pow *= x;
if(u >>= 1)
x *= x;
else
break;
}
return(pow);
}
double r_sign(real *a, real *b);
double r_sign(real *a, real *b)
{
double x;
x = (*a >= 0 ? *a : - *a);
return( *b >= 0 ? x : -x);
}
integer i_nint(real *x);
#undef abs
#include "math.h"
integer i_nint(real *x)
{
return( (*x)>=0 ?
floor(*x + .5) : -floor(.5 - *x) );
}