Don't inline floor into rem_pio2_large when implemented with asm, to fix no_panic

Author: quaternic

libm/src/math/rem_pio2_large.rs

@@ -11,7 +11,7 @@
  * ====================================================
  */
 
-use super::{floor, scalbn};
+use super::scalbn;
 
 // initial value for jk
 const INIT_JK: [usize; 4] = [3, 4, 4, 6];
@@ -223,6 +223,14 @@ const PIO2: [f64; 8] = [
 /// independent of the exponent of the input.
 #[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
 pub(crate) fn rem_pio2_large(x: &[f64], y: &mut [f64], e0: i32, prec: usize) -> i32 {
+    // FIXME: Use of inline assembly would currently cause this function to be
+    // considered potentially unwinding for any callers, causing them to fail `no_panic`.
+    // As a workaround, avoid inlining `floor` here when implemented with assembly.
+    #[cfg_attr(x86_no_sse, inline(never))]
+    extern "C" fn floor(x: f64) -> f64 {
+        super::floor(x)
+    }
+
     let x1p24 = f64::from_bits(0x4170000000000000); // 0x1p24 === 2 ^ 24
     let x1p_24 = f64::from_bits(0x3e70000000000000); // 0x1p_24 === 2 ^ (-24)