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simplify fp headers #1

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53 changes: 53 additions & 0 deletions libc/src/__support/CPP/limits.h
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,10 @@
#ifndef LLVM_LIBC_SRC___SUPPORT_CPP_LIMITS_H
#define LLVM_LIBC_SRC___SUPPORT_CPP_LIMITS_H

#include "src/__support/macros/attributes.h"
#include <float.h>
#include <limits.h>
#include <math.h>

namespace LIBC_NAMESPACE {
namespace cpp {
Expand Down Expand Up @@ -95,6 +98,56 @@ template <> class numeric_limits<__uint128_t> {
};
#endif

// floating point types

template <> struct numeric_limits<float> {
static constexpr float denorm_min() { return FLT_TRUE_MIN; }
static constexpr float min() { return FLT_MIN; }
static constexpr float lowest() { return -FLT_MAX; }
static constexpr float max() { return FLT_MAX; }
static constexpr float epsilon() { return FLT_EPSILON; }
// static constexpr float infinity() { return HUGE_VALF; }
LIBC_INLINE_VAR static constexpr int digits = FLT_MANT_DIG;
LIBC_INLINE_VAR static constexpr int digits10 = FLT_DIG;
LIBC_INLINE_VAR static constexpr int min_exponent = FLT_MIN_EXP;
LIBC_INLINE_VAR static constexpr int min_exponent10 = FLT_MIN_10_EXP;
LIBC_INLINE_VAR static constexpr int max_exponent = FLT_MAX_EXP;
LIBC_INLINE_VAR static constexpr int max_exponent10 = FLT_MAX_10_EXP;
LIBC_INLINE_VAR static constexpr int radix = FLT_RADIX;
};

template <> struct numeric_limits<double> {
static constexpr double denorm_min() { return DBL_TRUE_MIN; }
static constexpr double min() { return DBL_MIN; }
static constexpr double lowest() { return -DBL_MAX; }
static constexpr double max() { return DBL_MAX; }
static constexpr double epsilon() { return DBL_EPSILON; }
// static constexpr double infinity() { return HUGE_VAL; }
LIBC_INLINE_VAR static constexpr int digits = DBL_MANT_DIG;
LIBC_INLINE_VAR static constexpr int digits10 = DBL_DIG;
LIBC_INLINE_VAR static constexpr int min_exponent = DBL_MIN_EXP;
LIBC_INLINE_VAR static constexpr int min_exponent10 = DBL_MIN_10_EXP;
LIBC_INLINE_VAR static constexpr int max_exponent = DBL_MAX_EXP;
LIBC_INLINE_VAR static constexpr int max_exponent10 = DBL_MAX_10_EXP;
LIBC_INLINE_VAR static constexpr int radix = FLT_RADIX;
};

template <> struct numeric_limits<long double> {
static constexpr long double denorm_min() { return LDBL_TRUE_MIN; }
static constexpr long double min() { return LDBL_MIN; }
static constexpr long double lowest() { return -LDBL_MAX; }
static constexpr long double max() { return LDBL_MAX; }
static constexpr long double epsilon() { return LDBL_EPSILON; }
// static constexpr long double infinity() { return HUGE_VALL; }
LIBC_INLINE_VAR static constexpr int digits = LDBL_MANT_DIG;
LIBC_INLINE_VAR static constexpr int digits10 = LDBL_DIG;
LIBC_INLINE_VAR static constexpr int min_exponent = LDBL_MIN_EXP;
LIBC_INLINE_VAR static constexpr int min_exponent10 = LDBL_MIN_10_EXP;
LIBC_INLINE_VAR static constexpr int max_exponent = LDBL_MAX_EXP;
LIBC_INLINE_VAR static constexpr int max_exponent10 = LDBL_MAX_10_EXP;
LIBC_INLINE_VAR static constexpr int radix = FLT_RADIX;
};

} // namespace cpp
} // namespace LIBC_NAMESPACE

Expand Down
8 changes: 8 additions & 0 deletions libc/src/__support/FPUtil/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,14 @@ add_header_library(
libc.src.errno.errno
)

add_header_library(
float_representation
HDRS
FloatRepresentation.h
DEPENDS
libc.src.__support.uint128
)

add_header_library(
platform_defs
HDRS
Expand Down
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