forked from KolibriOS/kolibrios
65 lines
2.3 KiB
C
65 lines
2.3 KiB
C
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#ifndef _MATH_64_H_
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#define _MATH_64_H_
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#include "types.h"
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#define COMPILER_SUPPORTS_LONG_LONG //undefine if compiler doe snot uspport long long
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#ifdef COMPILER_SUPPORTS_LONG_LONG
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typedef unsigned long long UInt64;
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static inline UInt64 u64_from_halves(UInt32 hi, UInt32 lo) { return (((UInt64)hi) << 32ULL) | ((UInt64)lo); }
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static inline UInt64 u64_32_to_64(UInt32 v) { return (UInt64)v; }
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static inline UInt32 u64_64_to_32(UInt64 v) { return (UInt32)v; }
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static inline UInt32 u64_get_hi(UInt64 v) { return (UInt32)(v >> 32ULL); }
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static inline UInt64 u64_add(UInt64 a, UInt64 b) { return a + b; }
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static inline UInt64 u64_add32(UInt64 a, UInt32 b) { return a + (UInt64)b; }
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static inline UInt64 u64_umul3232(UInt32 a, UInt32 b) { return ((UInt64)a) * ((UInt64)b); } //sad but true: gcc has no u32xu32->64 multiply
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static inline UInt64 u64_smul3232(Int32 a, Int32 b) { return ((signed long long)a) * ((signed long long)b); } //sad but true: gcc has no s32xs32->64 multiply
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static inline UInt64 u64_shr(UInt64 a, unsigned bits) { return a >> (UInt64)bits; }
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static inline UInt64 u64_shl(UInt64 a, unsigned bits) { return a << (UInt64)bits; }
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static inline UInt64 u64_xtnd32(UInt64 a) { if(a & 0x80000000UL) a |= (((UInt64)-1) << 32ULL); return a; }
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static inline Boolean u64_isZero(UInt64 a) { return a == 0; }
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static inline UInt64 u64_inc(UInt64 a) { return a + 1ULL; }
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static inline UInt64 u64_and(UInt64 a, UInt64 b) { return a & b; }
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static inline UInt64 u64_zero(void) { return 0; }
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static inline UInt64 u64_sub(UInt64 a, UInt64 b) { return a - b; }
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#else
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typedef struct{
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UInt32 hi, lo;
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}UInt64;
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UInt64 u64_from_halves(UInt32 hi, UInt32 lo);
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UInt64 u64_32_to_64(UInt32 v);
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UInt32 u64_64_to_32(UInt64 v);
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UInt32 u64_get_hi(UInt64 v);
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UInt64 u64_add(UInt64 a, UInt64 b);
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UInt64 u64_umul3232(UInt32 a, UInt32 b);
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UInt64 u64_smul3232(Int32 a, Int32 b);
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UInt64 u64_shr(UInt64 a, unsigned bits);
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UInt64 u64_shl(UInt64 a, unsigned bits);
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UInt64 u64_add32(UInt64 a, UInt32 b);
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UInt64 u64_xtnd32(UInt64 a);
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Boolean u64_isZero(UInt64 a);
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UInt64 u64_inc(UInt64 a);
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UInt64 u64_zero(void);
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UInt64 u64_sub(UInt64 a, UInt64 b);
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UInt64 u64_and(UInt64 a, UInt64 b);
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#endif
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#endif
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