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[libc] Add proxy header for float.h. #93504

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Merged
merged 5 commits into from
May 28, 2024
Merged

[libc] Add proxy header for float.h. #93504

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6fe877d
[libc] Add proxy header for float.h.
lntue May 28, 2024
14be43f
Address comments.
lntue May 28, 2024
e6f10b6
Address comments.
lntue May 28, 2024
1b58749
Only use predefined macros.
lntue May 28, 2024
08634a8
Use __builtin_flt_rounds() if available.
lntue May 28, 2024
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12 changes: 9 additions & 3 deletions libc/hdr/float_macros.h
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Original file line number Diff line number Diff line change
Expand Up @@ -9,11 +9,17 @@
#ifndef LLVM_LIBC_HDR_FLOAT_MACROS_H
#define LLVM_LIBC_HDR_FLOAT_MACROS_H

#ifndef LIBC_FULL_BUILD
// Overlay mode
#ifdef LIBC_FULL_BUILD

#include "include/llvm-libc-macros/float-macros.h"

#else // Overlay mode

#include <float.h>
#endif // !LLVM_LIBC_FULL_BUILD

// Filling missing macros if any.
#include "include/llvm-libc-macros/float-macros.h"

#endif // LLVM_LIBC_FULL_BUILD

#endif // LLVM_LIBC_HDR_FLOAT_MACROS_H
4 changes: 1 addition & 3 deletions libc/src/math/generic/scalbnf128.cpp
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Expand Up @@ -14,9 +14,7 @@
namespace LIBC_NAMESPACE {

LLVM_LIBC_FUNCTION(float128, scalbnf128, (float128 x, int n)) {
#if !defined(FLT_RADIX)
#error FLT_RADIX undefined.
#elif FLT_RADIX != 2
#if FLT_RADIX != 2
#error FLT_RADIX!=2, unimplemented.
#else
return fputil::ldexp(x, n);
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