1%verify "executed"
2%verify "basic lt, gt, eq */
3%verify "left arg NaN"
4%verify "right arg NaN"
5    /*
6     * Compare two floating-point values.  Puts 0, 1, or -1 into the
7     * destination register based on the results of the comparison.
8     *
9     * int compare(x, y) {
10     *     if (x == y) {
11     *         return 0;
12     *     } else if (x < y) {
13     *         return -1;
14     *     } else if (x > y) {
15     *         return 1;
16     *     } else {
17     *         return 1;
18     *     }
19     * }
20     *
21     * On entry:
22     *    r0 = &op1 [vBB]
23     *    r1 = &op2 [vCC]
24     */
25    /* op vAA, vBB, vCC */
26    fldd    d0, [r0]                    @ d0<- vBB
27    fldd    d1, [r1]                    @ d1<- vCC
28    fcmpd  d0, d1                       @ compare (vBB, vCC)
29    mov     r0, #1                      @ r0<- 1 (default)
30    fmstat                              @ export status flags
31    mvnmi   r0, #0                      @ (less than) r0<- -1
32    moveq   r0, #0                      @ (equal) r0<- 0
33    bx      lr
34