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chdir s;
keyword version of changedir
chol(x);
returns the Choleski decomposition of x
choldn(p,x);
returns the Choleski decomposition of p’p-x’x
cholsol(b,a);
solves ax=b using the Choleski decomposition
cholup(p,x);
returns the Choleski decomposition of p’p+x’x
chrs(mx);
converts numbers into characters (32 to a space, etc.), returns a string
clear
sets variables to 0, creates them if in main section
clearg
sets global variables to 0, creates them if in main section
close(fileno);
closes the file
closeall fileno1,fileno2,...;
closes all files and sets specified variables to 0
cls();
does nothing
{zr,zi} = cmadd(xr,xi,yr,yi);
returns result from complex addition (not in complex mode)
{zr,zi} = cmcplx(x);
returns x,0 (not in complex mode)
{yr,yi,zr,zi} = cmcplx2(x1,x2);
returns x1,0,x2,0 (not in complex mode)
{zr,zi} = cmdiv(xr,xi,yr,yi);
returns result from complex dot division (not in complex mode)
{zr,zi} = cmemult(xr,xi,yr,yi);
returns result from complex dot multiplication (not in complex mode)
cmimag(xr,xi);
returns xi (not in complex mode)
{zr,zi} = cminv(xr,xi);
returns result from complex inversion (not in complex mode)
{zr,zi} = cmmult(xr,xi,yr,yi);
returns result from complex multiplication (not in complex mode)
cmreal(xr,xi);
returns xr (not in complex mode)
{zr,zi} = cmsoln(br,bi,ar,ai);
returns result from complex solution to (ar,ai)z=(br,bi) (not in complex mode)
{zr,zi} = cmsub(xr,xi,yr,yi);
returns result from complex subtraction (not in complex mode)
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