From c5107d50654571202ffee22a5288282ba9f0ad4b Mon Sep 17 00:00:00 2001
From: MarcZX100 <marczxrr@gmail.com>
Date: Thu, 8 Oct 2026 18:48:17 +0000
Subject: [PATCH] feat(libc): implement floating minmax

---
 core/libs/prx/libc/src/Math.cpp |  4 ++++
 core/libs/tests/GuestMath.cpp   | 13 +++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/core/libs/prx/libc/src/Math.cpp b/core/libs/prx/libc/src/Math.cpp
index 1ae4fb350c7..4c7cc26d5aa 100644
--- a/core/libs/prx/libc/src/Math.cpp
+++ b/core/libs/prx/libc/src/Math.cpp
@@ -67,6 +67,10 @@ float APS5_VABI atanf_nid_postfix(float x) { return std::atan(x); }
 double APS5_VABI atan2_nid_postfix(double y, double x) { return std::atan2(y, x); }
 float APS5_VABI powf_nid_postfix(float base, float exp) { return std::pow(base, exp); }
 double APS5_VABI pow_nid_postfix(double base, double exp) { return std::pow(base, exp); }
+double APS5_VABI fmin_nid_postfix(double x, double y) { return std::fmin(x, y); }
+double APS5_VABI fmax_nid_postfix(double x, double y) { return std::fmax(x, y); }
+float APS5_VABI fminf_nid_postfix(float x, float y) { return std::fmin(x, y); }
+float APS5_VABI fmaxf_nid_postfix(float x, float y) { return std::fmax(x, y); }
 float APS5_VABI expf_nid_postfix(float x) { return std::exp(x); }
 float APS5_VABI exp2f_nid_postfix(float x) { return std::exp2(x); }
 float APS5_VABI logf_nid_postfix(float x) { return std::log(x); }
diff --git a/core/libs/tests/GuestMath.cpp b/core/libs/tests/GuestMath.cpp
index ffdc06dffa1..8c85fc4a5e1 100644
--- a/core/libs/tests/GuestMath.cpp
+++ b/core/libs/tests/GuestMath.cpp
@@ -30,6 +30,10 @@ float APS5_VABI tanf_nid_postfix(float);
 float APS5_VABI log10f_nid_postfix(float);
 float APS5_VABI logbf_nid_postfix(float);
 double APS5_VABI exp2_nid_postfix(double);
+double APS5_VABI fmin_nid_postfix(double, double);
+double APS5_VABI fmax_nid_postfix(double, double);
+float APS5_VABI fminf_nid_postfix(float, float);
+float APS5_VABI fmaxf_nid_postfix(float, float);
 double APS5_VABI ldexp_nid_postfix(double, int);
 double APS5_VABI scalbn_nid_postfix(double, int);
 float APS5_VABI scalbnf_nid_postfix(float, int);
@@ -201,6 +205,15 @@ int main() {
     Require(logbf_nid_postfix(-std::numeric_limits<float>::infinity()) == std::numeric_limits<float>::infinity());
     Require(std::isnan(logbf_nid_postfix(std::numeric_limits<float>::quiet_NaN())));
     Require(exp2_nid_postfix(-3.) == 0.125);
+    const double doubleNan = std::numeric_limits<double>::quiet_NaN();
+    const float floatNan = std::numeric_limits<float>::quiet_NaN();
+    Require(fmin_nid_postfix(3.0, -2.0) == -2.0 && fmax_nid_postfix(3.0, -2.0) == 3.0);
+    Require(fminf_nid_postfix(3.0f, -2.0f) == -2.0f && fmaxf_nid_postfix(3.0f, -2.0f) == 3.0f);
+    Require(fmin_nid_postfix(doubleNan, 4.0) == 4.0 && fmax_nid_postfix(4.0, doubleNan) == 4.0);
+    Require(fminf_nid_postfix(floatNan, 4.0f) == 4.0f && fmaxf_nid_postfix(4.0f, floatNan) == 4.0f);
+    Require(std::isnan(fmin_nid_postfix(doubleNan, doubleNan)) && std::isnan(fmaxf_nid_postfix(floatNan, floatNan)));
+    Require(std::isinf(fmin_nid_postfix(-std::numeric_limits<double>::infinity(), 1.0)));
+    Require(std::isinf(fmaxf_nid_postfix(std::numeric_limits<float>::infinity(), 1.0f)));
     Require(ldexp_nid_postfix(0.75, 4) == 12.);
     Require(scalbn_nid_postfix(0.75, -2) == 0.1875);
     Require(scalbnf_nid_postfix(0.75f, 4) == 12.f);