From 92862fdf399481998a490cf9cba175b9b41415ff Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Fri, 8 Nov 2024 02:49:21 +0200
Subject: [PATCH] LibC: Implement nan{,f,l} as functions
One port was using function pointers to these functions so macros don't
work.
---
userspace/libraries/LibC/include/math.h | 6 +++---
userspace/libraries/LibC/math.cpp | 3 +++
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/userspace/libraries/LibC/include/math.h b/userspace/libraries/LibC/include/math.h
index 9b62cbc3..df8d8a12 100644
--- a/userspace/libraries/LibC/include/math.h
+++ b/userspace/libraries/LibC/include/math.h
@@ -191,9 +191,9 @@ long lroundl(long double);
double modf(double, double*);
float modff(float, float*);
long double modfl(long double, long double*);
-#define nan(tagp) __builtin_nan(tagp)
-#define nanf(tagp) __builtin_nanf(tagp)
-#define nanl(tagp) __builtin_nanl(tagp)
+double nan(const char*);
+float nanf(const char*);
+long double nanl(const char*);
double nearbyint(double);
float nearbyintf(float);
long double nearbyintl(long double);
diff --git a/userspace/libraries/LibC/math.cpp b/userspace/libraries/LibC/math.cpp
index 67b7537c..355039df 100644
--- a/userspace/libraries/LibC/math.cpp
+++ b/userspace/libraries/LibC/math.cpp
@@ -249,6 +249,9 @@ BAN_FUNC1(logb)
FUNC_EXPR1_RET(lrint, long, BAN::Math::rint(a))
FUNC_EXPR1_RET(lround, long, BAN::Math::round(a))
BAN_FUNC2_PTR(modf)
+double nan(const char* tagp) { return __builtin_nan(tagp); }
+float nanf(const char* tagp) { return __builtin_nanf(tagp); }
+long double nanl(const char* tagp) { return __builtin_nanl(tagp); }
FUNC_EXPR1(nearbyint, BAN::Math::rint(a))
FUNC_EXPR2(nextafter, nextafter_impl(a, b))
FUNC_EXPR2_TYPE(nexttoward, long double, nextafter_impl(a, b))