forget difference between big and small commands - obsolete with vm.
[minix.git] / lib / ack / fphook / ngf8.fc
blob473ffa5108a416e285b642e6aa8f2193209399f9
1 /*
2   (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
3   See the copyright notice in the ACK home directory, in the file "Copyright".
4 */
6 /* $Header$ */
8 /*
9                 NEGATE A FLOATING POINT (NGF 8)
11 /********************************************************/
13 #include "FP_types.h"
14 #include "get_put.h"
16 #define OFF ((FL_MSL_AT_LOW_ADDRESS ? 0 : 4) + (FL_MSW_AT_LOW_ADDRESS ? 0 : 2) + (FL_MSB_AT_LOW_ADDRESS ? 0 : 1))
18 void
19 ngf8(f)
20 DOUBLE  f;
22         unsigned char   *p;
24         if (f.d[0] != 0 || f.d[1] != 0) {
25                 p = (unsigned char *) &f + OFF;
26                 *p ^= 0x80;
27         }