Re-enable lgamma_r

Author: tgross35

crates/libm-test/src/mpfloat.rs

@@ -274,23 +274,33 @@ macro_rules! impl_op_for_ty {
 impl_op_for_ty!(f32, "f");
 impl_op_for_ty!(f64, "");
 
-// TODO can't just use a suffix
-// Account for `lgamma_r` not having a simple `f` suffix
-// pub mod lgammaf_r {
-//     pub use super::lgamma_rf::*;
-// }
-
-// impl MpOp for crate::func::[<lgamma_r $suffix>]::Func {
-//     type MpTy = MpFloat;
-
-//     fn new_mp() -> Self::MpTy {
-//         new_mpfloat::<Self::FTy>()
-//     }
-
-//     fn run(this: &mut Self::MpTy, input: Self::RustArgs) -> Self::RustRet {
-//         this.assign(input.0);
-//         let (sign, ord) = this.ln_abs_gamma_round(Nearest);
-//         let ret = prep_retval::<Self::FTy>(this, ord);
-//         (ret, sign as i32)
-//     }
-// }
+// `lgamma_r` is not a simple suffix so we can't use the above macro.
+impl MpOp for crate::func::lgamma_r::Func {
+    type MpTy = MpFloat;
+
+    fn new_mp() -> Self::MpTy {
+        new_mpfloat::<Self::FTy>()
+    }
+
+    fn run(this: &mut Self::MpTy, input: Self::RustArgs) -> Self::RustRet {
+        this.assign(input.0);
+        let (sign, ord) = this.ln_abs_gamma_round(Nearest);
+        let ret = prep_retval::<Self::FTy>(this, ord);
+        (ret, sign as i32)
+    }
+}
+
+impl MpOp for crate::func::lgammaf_r::Func {
+    type MpTy = MpFloat;
+
+    fn new_mp() -> Self::MpTy {
+        new_mpfloat::<Self::FTy>()
+    }
+
+    fn run(this: &mut Self::MpTy, input: Self::RustArgs) -> Self::RustRet {
+        this.assign(input.0);
+        let (sign, ord) = this.ln_abs_gamma_round(Nearest);
+        let ret = prep_retval::<Self::FTy>(this, ord);
+        (ret, sign as i32)
+    }
+}

crates/libm-test/tests/multiprecision.rs

@@ -71,9 +71,5 @@ libm_macros::for_each_function! {
         // https://github.com/rust-lang/libm/pull/311#discussion_r1818273392
         nextafter,
         nextafterf,
-
-        // TODO: impl in module
-        lgamma_r,
-        lgammaf_r,
     ],
 }