57 lines
979 B
C
57 lines
979 B
C
#include <stdio.h>
|
|
#include <ctype.h>
|
|
#include <math.h>
|
|
|
|
int lineno;
|
|
|
|
union {
|
|
unsigned w[2];
|
|
double d;
|
|
} uda, udb, udc;
|
|
|
|
/*
|
|
* Read test vectors from file and test the fp emulation by
|
|
* comparing it with the hardware.
|
|
*/
|
|
main(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
register char *cp;
|
|
register int c;
|
|
char buf[10];
|
|
unsigned arg[4];
|
|
|
|
for (lineno = 1; ; lineno++) {
|
|
c = scanf("%x %x %x %x", &arg[1], &arg[0], &arg[3], &arg[2]);
|
|
if (c < 0)
|
|
break;
|
|
if (c != 4) {
|
|
fprintf(stderr, "line %d: expected 4 args\n",
|
|
lineno);
|
|
goto skip;
|
|
}
|
|
|
|
uda.w[0] = arg[0];
|
|
uda.w[1] = arg[1];
|
|
udb.w[0] = arg[2];
|
|
udb.w[1] = arg[3];
|
|
udc.d = copysign(uda.d, udb.d);
|
|
|
|
printf("line %d: copysign(%x,%x %x,%x) = %x,%x\n",
|
|
lineno,
|
|
uda.w[1], uda.w[0],
|
|
udb.w[1], udb.w[0],
|
|
udc.w[1], udc.w[0]);
|
|
skip:
|
|
while ((c = getchar()) != EOF && c != '\n')
|
|
;
|
|
}
|
|
}
|
|
|
|
trapsignal(p, sig, code)
|
|
int p, sig, code;
|
|
{
|
|
printf("line %d: signal(%d, %x)\n", lineno, sig, code);
|
|
}
|