From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 29 Aug 2021 10:32:08 +0000 (+0300)
Subject: Use <cstdint> in BinFloat
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=0d925901d1446de6fe76616b9b2e731d7702571e;p=libs%2Fdatafile.git

Use <cstdint> in BinFloat
---

diff --git a/source/binfloat.cpp b/source/binfloat.cpp
index fa4be73..50fe5c5 100644
--- a/source/binfloat.cpp
+++ b/source/binfloat.cpp
@@ -7,9 +7,9 @@ using namespace std;
 namespace Msp {
 namespace DataFile {
 
-BinFloat BinFloat::explode(UInt64 value, const Bits &bits)
+BinFloat BinFloat::explode(uint64_t value, const Bits &bits)
 {
-	UInt64 mantissa_mask = (UInt64(1)<<bits.mantissa)-1;
+	uint64_t mantissa_mask = (1ULL<<bits.mantissa)-1;
 	int exponent_mask = (1<<bits.exponent)-1;
 
 	BinFloat bf;
@@ -24,7 +24,7 @@ BinFloat BinFloat::explode(UInt64 value, const Bits &bits)
 	else
 	{
 		// Extract mantissa, add the implied one and align it to high bits
-		bf.mantissa = (value&mantissa_mask) | (UInt64(1)<<bits.mantissa);
+		bf.mantissa = (value&mantissa_mask) | (uint64_t(1)<<bits.mantissa);
 		bf.mantissa <<= 63-bits.mantissa;
 	}
 
@@ -34,29 +34,29 @@ BinFloat BinFloat::explode(UInt64 value, const Bits &bits)
 	return bf;
 }
 
-UInt64 BinFloat::compose(const Bits &bits)
+uint64_t BinFloat::compose(const Bits &bits)
 {
-	UInt64 mantissa_mask = (UInt64(1)<<bits.mantissa)-1;
+	uint64_t mantissa_mask = (1ULL<<bits.mantissa)-1;
 	int exponent_mask = (1<<bits.exponent)-1;
 
 	int biased_exponent = exponent+(exponent_mask>>1);
 	// Shift down and round the mantissa
-	UInt64 rounded_mantissa = ((mantissa>>(62-bits.mantissa))+1)>>1;
+	uint64_t rounded_mantissa = ((mantissa>>(62-bits.mantissa))+1)>>1;
 	// If the integer part is greater than one, we need to use a higher exponent
 	if((rounded_mantissa>>bits.mantissa)>1)
 		++biased_exponent;
 
 	if(biased_exponent>=exponent_mask || infinity)
 		// Overflow, return infinity
-		return UInt64(sign<<bits.exponent | exponent_mask)<<bits.mantissa;
+		return uint64_t(sign<<bits.exponent | exponent_mask)<<bits.mantissa;
 	else if(biased_exponent<=0 || !mantissa)
 		// Underflow, return zero
 		return 0;
 	else
 	{
-		UInt64 value = rounded_mantissa&mantissa_mask;
-		value |= UInt64(biased_exponent)<<bits.mantissa;
-		value |= UInt64(sign)<<(bits.mantissa+bits.exponent);
+		uint64_t value = rounded_mantissa&mantissa_mask;
+		value |= uint64_t(biased_exponent)<<bits.mantissa;
+		value |= uint64_t(sign)<<(bits.mantissa+bits.exponent);
 		return value;
 	}
 }
diff --git a/source/binfloat.h b/source/binfloat.h
index d16570f..2c74441 100644
--- a/source/binfloat.h
+++ b/source/binfloat.h
@@ -1,7 +1,9 @@
 #ifndef MSP_DATAFILE_BINFLOAT_H_
 #define MSP_DATAFILE_BINFLOAT_H_
 
-#include "type.h"
+#include <climits>
+#include <cstdint>
+#include <cstring>
 
 namespace Msp {
 namespace DataFile {
@@ -25,38 +27,56 @@ struct BinFloat
 	};
 
 	template<typename T>
-	union Conversion
-	{
-		T f;
-		typename MatchingInt<T>::UnsignedType i;
-	};
+	struct MatchingInt;
+
+	template<typename T>
+	union Conversion;
 
 	bool sign;
 	bool infinity;
 	int exponent;
-	UInt64 mantissa;
+	std::uint64_t mantissa;
 
-	static BinFloat explode(UInt64, const Bits &);
+	static BinFloat explode(std::uint64_t, const Bits &);
 
 	template<typename T>
-	static BinFloat explode_iec559(T v)
-	{
-		Conversion<T> c;
-		c.f = v;
-		return explode(c.i, sizeof(T)*CHAR_BIT);
-	}
+	static BinFloat explode_iec559(T v);
 
-	UInt64 compose(const Bits &);
+	std::uint64_t compose(const Bits &);
 
 	template<typename T>
-	T compose_iec559()
-	{
-		Conversion<T> c;
-		c.i = compose(sizeof(T)*CHAR_BIT);
-		return c.f;
-	}
+	T compose_iec559();
 };
 
+template<>
+struct BinFloat::MatchingInt<float> { typedef std::uint32_t Type; };
+
+template<>
+struct BinFloat::MatchingInt<double> { typedef std::uint64_t Type; };
+
+template<typename T>
+union BinFloat::Conversion
+{
+	T f;
+	typename MatchingInt<T>::Type i;
+};
+
+template<typename T>
+inline BinFloat BinFloat::explode_iec559(T v)
+{
+	Conversion<T> c;
+	c.f = v;
+	return explode(c.i, sizeof(T)*CHAR_BIT);
+}
+
+template<typename T>
+inline T BinFloat::compose_iec559()
+{
+	Conversion<T> c;
+	c.i = compose(sizeof(T)*CHAR_BIT);
+	return c.f;
+}
+
 } // namespace DataFile
 } // namespace Msp