Add into_result

Author: termoshtt

src/impl2/mod.rs

@@ -7,5 +7,15 @@ pub use self::opnorm::*;
 pub use self::qr::*;
 pub use self::svd::*;
 
+use super::error::*;
+
 pub trait LapackScalar: OperatorNorm_ + QR_ + SVD_ {}
 impl<A> LapackScalar for A where A: OperatorNorm_ + QR_ + SVD_ {}
+
+pub fn into_result<T>(info: i32, val: T) -> Result<T> {
+    if info == 0 {
+        Ok(val)
+    } else {
+        Err(LapackError::new(info).into())
+    }
+}