[libc] Fix INFINITY being defined as a double

[jhuber6]

Summary:
If the implementation supports floating-point infinities, the macro
INFINITY expands to constant expression of type float which evaluates to
positive or unsigned infinity.

Currently this is a double, this makes it a float.

[llvmbot]

@llvm/pr-subscribers-libc

Author: Joseph Huber (jhuber6)

Changes

Summary:
If the implementation supports floating-point infinities, the macro
INFINITY expands to constant expression of type float which evaluates to
positive or unsigned infinity.

Currently this is a double, this makes it a float.

---

Full diff: https://github.com/llvm/llvm-project/pull/103445.diff

1 Files Affected:

• (modified) libc/include/llvm-libc-macros/math-macros.h (+1-1)

diff --git a/libc/include/llvm-libc-macros/math-macros.h b/libc/include/llvm-libc-macros/math-macros.h
index 0ceb2c5c8202b0..2f05d7544666e6 100644
--- a/libc/include/llvm-libc-macros/math-macros.h
+++ b/libc/include/llvm-libc-macros/math-macros.h
@@ -28,7 +28,7 @@
 
 #define HUGE_VAL __builtin_huge_val()
 #define HUGE_VALF __builtin_huge_valf()
-#define INFINITY __builtin_inf()
+#define INFINITY __builtin_inff()
 #define NAN __builtin_nanf("")
 
 #define FP_ILOGB0 (-INT_MAX - 1)