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-rw-r--r--library/compiler-builtins/libm/src/math/lgamma.rs8
1 files changed, 8 insertions, 0 deletions
diff --git a/library/compiler-builtins/libm/src/math/lgamma.rs b/library/compiler-builtins/libm/src/math/lgamma.rs
new file mode 100644
index 00000000000..8312dc18648
--- /dev/null
+++ b/library/compiler-builtins/libm/src/math/lgamma.rs
@@ -0,0 +1,8 @@
+use super::lgamma_r;
+
+/// The natural logarithm of the
+/// [Gamma function](https://en.wikipedia.org/wiki/Gamma_function) (f64).
+#[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
+pub fn lgamma(x: f64) -> f64 {
+    lgamma_r(x).0
+}