diff --git a/core/libs/prx/libc/src/MathExact.cpp b/core/libs/prx/libc/src/MathExact.cpp
index bbfe5114ef..e6f7d3849f 100644
--- a/core/libs/prx/libc/src/MathExact.cpp
+++ b/core/libs/prx/libc/src/MathExact.cpp
@@ -5,6 +5,7 @@
 #include <cmath>
 #include <cstdint>
 #include <cstring>
+#include <emmintrin.h>
 #include <limits>
 
 #include "prx/libc/include/General.hpp"
@@ -179,25 +180,13 @@ long double APS5_VABI fmal_nid_postfix(long double x, long double y, long double
 double APS5_VABI rint_nid_postfix(double x) { return std::isnan(x) ? x + x : std::rint(x); }
 float APS5_VABI rintf_nid_postfix(float x) { return std::isnan(x) ? x + x : std::rint(x); }
 
-std::int64_t APS5_VABI lrint_nid_postfix(double x) {
-    ErrnoGuard guard;
-    return std::llrint(x);
-}
+std::int64_t APS5_VABI lrint_nid_postfix(double x) { return _mm_cvtsd_si64(_mm_set_sd(x)); }
 
-std::int64_t APS5_VABI lrintf_nid_postfix(float x) {
-    ErrnoGuard guard;
-    return std::llrint(x);
-}
+std::int64_t APS5_VABI lrintf_nid_postfix(float x) { return _mm_cvtss_si64(_mm_set_ss(x)); }
 
-long long APS5_VABI llrint_nid_postfix(double x) {
-    ErrnoGuard guard;
-    return std::llrint(x);
-}
+long long APS5_VABI llrint_nid_postfix(double x) { return _mm_cvtsd_si64(_mm_set_sd(x)); }
 
-long long APS5_VABI llrintf_nid_postfix(float x) {
-    ErrnoGuard guard;
-    return std::llrint(x);
-}
+long long APS5_VABI llrintf_nid_postfix(float x) { return _mm_cvtss_si64(_mm_set_ss(x)); }
 
 double APS5_VABI drem_nid_postfix(double x, double y) {
     return Remainder(x, y);
diff --git a/core/libs/tests/GuestMathExact.cpp b/core/libs/tests/GuestMathExact.cpp
index 5db64f610d..53b41df063 100644
--- a/core/libs/tests/GuestMathExact.cpp
+++ b/core/libs/tests/GuestMathExact.cpp
@@ -103,6 +103,11 @@ static void CheckConsoleQuirks() {
     Require(scalblnl_nid_postfix(1.0L, INT64_C(0x100000001)) == 2.0L && scalblnl_nid_postfix(1.0L, INT64_MAX) == 0.5L);
     Require(scalbln_nid_postfix(1.0, INT64_C(0x100000001)) == INFINITY && scalbln_nid_postfix(1.0, INT64_MIN) == 0.0);
     Require(lrint_nid_postfix(0x1p40) == INT64_C(0x10000000000));
+    for (const double outside : {0x1p63, -0x1p64, 1e300, static_cast<double>(INFINITY), -static_cast<double>(INFINITY), static_cast<double>(NAN)}) {
+        Require(lrint_nid_postfix(outside) == INT64_MIN && llrint_nid_postfix(outside) == LLONG_MIN);
+        Require(lrintf_nid_postfix(static_cast<float>(outside)) == INT64_MIN && llrintf_nid_postfix(static_cast<float>(outside)) == LLONG_MIN);
+    }
+    Require(lrint_nid_postfix(-0x1p63) == INT64_MIN && lrintf_nid_postfix(0x1.fffffep62f) == INT64_C(0x7fffff8000000000));
     const long double product = Extended(0x4000, 0xe000000000000000ull) * Extended(0x4001, 0xda76b022816f6a94ull);
     Require(SameBits(fmal_nid_postfix(Extended(0x4000, 0xe000000000000000ull), Extended(0x4001, 0xda76b022816f6a94ull), Extended(0x9b45, 0xd3b49eac84283c95ull)), product));
     Require(finite_nid_postfix(1.0) == 1 && finite_nid_postfix(INFINITY) == 0);