progress

Author: BurntSushi

QUESTIONS.md

@@ -18,3 +18,9 @@ fn main() {
 
 LLVM types the `count` parameter in `_mm_sll_epi16` as `i16x8`, but the right
 type is probably `i64x2`.
+
+---
+
+What is the deal with the ucomi f64 comparison functions in SSE2? Clang's
+headers indicate some specific behavior with NAN, but I can't seem to reproduce
+it. Intel's official docs are very vague.

TODO.md

@@ -156,29 +156,29 @@ sse2
 * [x] `_mm_cmpngt_sd`
 * [x] `_mm_cmpnge_sd`
 * [x] `_mm_cmpeq_pd`
-* [ ] `_mm_cmplt_pd`
-* [ ] `_mm_cmple_pd`
-* [ ] `_mm_cmpgt_pd`
-* [ ] `_mm_cmpge_pd`
-* [ ] `_mm_cmpord_pd`
-* [ ] `_mm_cmpunord_pd`
-* [ ] `_mm_cmpneq_pd`
-* [ ] `_mm_cmpnlt_pd`
-* [ ] `_mm_cmpnle_pd`
-* [ ] `_mm_cmpngt_pd`
-* [ ] `_mm_cmpnge_pd`
-* [ ] `_mm_comieq_sd`
-* [ ] `_mm_comilt_sd`
-* [ ] `_mm_comile_sd`
-* [ ] `_mm_comigt_sd`
-* [ ] `_mm_comige_sd`
-* [ ] `_mm_comineq_sd`
-* [ ] `_mm_ucomieq_sd`
-* [ ] `_mm_ucomilt_sd`
-* [ ] `_mm_ucomile_sd`
-* [ ] `_mm_ucomigt_sd`
-* [ ] `_mm_ucomige_sd`
-* [ ] `_mm_ucomineq_sd`
+* [x] `_mm_cmplt_pd`
+* [x] `_mm_cmple_pd`
+* [x] `_mm_cmpgt_pd`
+* [x] `_mm_cmpge_pd`
+* [x] `_mm_cmpord_pd`
+* [x] `_mm_cmpunord_pd`
+* [x] `_mm_cmpneq_pd`
+* [x] `_mm_cmpnlt_pd`
+* [x] `_mm_cmpnle_pd`
+* [x] `_mm_cmpngt_pd`
+* [x] `_mm_cmpnge_pd`
+* [x] `_mm_comieq_sd`
+* [x] `_mm_comilt_sd`
+* [x] `_mm_comile_sd`
+* [x] `_mm_comigt_sd`
+* [x] `_mm_comige_sd`
+* [x] `_mm_comineq_sd`
+* [x] `_mm_ucomieq_sd`
+* [x] `_mm_ucomilt_sd`
+* [x] `_mm_ucomile_sd`
+* [x] `_mm_ucomigt_sd`
+* [x] `_mm_ucomige_sd`
+* [x] `_mm_ucomineq_sd`
 * [ ] `_mm_cvtpd_ps`
 * [ ] `_mm_cvtps_pd`
 * [ ] `_mm_cvtpd_epi32`

examples/play.rs

@@ -4,8 +4,8 @@ use std::env;
 use stdsimd as s;
 
 #[inline(never)]
-fn foobar(a: s::f64x2, b: s::f64x2) -> s::f64x2 {
-    s::_mm_cmpge_sd(a, b)
+fn foobar(a: s::f64x2, b: s::f64x2) -> bool {
+    s::_mm_ucomieq_sd(a, b)
 }
 
 fn main() {