Disable tests on PowerPC

Author: Jules-Bertholet

src/math/rint.rs

@@ -25,6 +25,8 @@ pub fn rint(x: f64) -> f64 {
     }
 }
 
+// PowerPC tests are failing on LLVM 13: https://github.com/rust-lang/rust/issues/88520
+#[cfg(not(target_arch = "powerpc64"))]
 #[cfg(test)]
 mod tests {
     use super::rint;

src/math/rintf.rs

@@ -25,6 +25,8 @@ pub fn rintf(x: f32) -> f32 {
     }
 }
 
+// PowerPC tests are failing on LLVM 13: https://github.com/rust-lang/rust/issues/88520
+#[cfg(not(target_arch = "powerpc64"))]
 #[cfg(test)]
 mod tests {
     use super::rintf;