urbit/j/f/fitz.c
2014-11-17 13:56:51 -08:00

72 lines
1.5 KiB
C

/* j/6/fitz.c
**
** This file is in the public domain.
*/
#include "all.h"
/* functions
*/
static u3_noun
_fitz_fiz(
u3_noun yaz,
u3_noun wix)
{
c3_w yaz_w = u3r_met(3, yaz);
c3_w wix_w = u3r_met(3, wix);
c3_y yaz_y, wix_y;
yaz_y = (0 == yaz_w) ? 0 : u3r_byte((yaz_w - 1), yaz);
if ( (yaz_y < 'A') || (yaz_y > 'Z') ) yaz_y = 0;
wix_y = (0 == wix_w) ? 0 : u3r_byte((wix_w - 1), wix);
if ( (wix_y < 'A') || (wix_y > 'Z') ) wix_y = 0;
if ( yaz_y && wix_y ) {
if ( !wix_y || (wix_y > yaz_y) ) {
return c3n;
}
}
return c3y;
}
u3_noun
u3qf_fitz(
u3_noun yaz,
u3_noun wix)
{
c3_w i_w, met_w = c3_min(u3r_met(3, yaz), u3r_met(3, wix));
if ( c3n == _fitz_fiz(yaz, wix) ) {
return c3n;
}
for ( i_w = 0; i_w < met_w; i_w++ ) {
c3_y yaz_y = u3r_byte(i_w, yaz);
c3_y wix_y = u3r_byte(i_w, wix);
if ( (yaz_y >= 'A') && (yaz_y <= 'Z') ) yaz_y = 0;
if ( (wix_y >= 'A') && (wix_y <= 'Z') ) wix_y = 0;
if ( yaz_y && wix_y && (yaz_y != wix_y) ) {
return c3n;
}
}
return c3y;
}
u3_noun
u3wf_fitz(
u3_noun cor)
{
u3_noun yaz, wix;
if ( (c3n == u3r_mean(cor, u3x_sam_2, &yaz, u3x_sam_3, &wix, 0)) ||
(c3n == u3ud(yaz)) ||
(c3n == u3ud(wix)) )
{
return u3m_bail(c3__fail);
} else {
return u3qf_fitz(yaz, wix);
}
}