fix x86_64 lrintl asm, again

the underlying problem was not incorrect sign extension (fixed in the
previous commit to this file by nsz) but that code that treats "long"
as 32-bit was copied blindly from i386 to x86_64.

now lrintl is identical to llrintl on x86_64, as it should be.

diff --git a/src/math/x86_64/lrintl.s b/src/math/x86_64/lrintl.s
index 0e2c771..d587b12 100644 (file)
--- a/src/math/x86_64/lrintl.s
+++ b/src/math/x86_64/lrintl.s
@@ -2,6 +2,6 @@
 .type lrintl,@function
 lrintl:
        fldt 8(%rsp)
-       fistpl 8(%rsp)
-       movslq 8(%rsp),%rax
+       fistpll 8(%rsp)
+       mov 8(%rsp),%rax
        ret