#include "lib/types.h"
#include "maths/Sqrt.h"
Go to the source code of this file.
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class | CFixed< T, max_t, total_bits, int_bits, fract_bits_, fract_pow2 > |
| A simple fixed-point number class. More...
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struct | std::numeric_limits< CFixed< T, max_t, total_bits, int_bits, fract_bits_, fract_pow2 > > |
| std::numeric_limits specialisation, currently just providing min and max More...
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#define | USE_FIXED_OVERFLOW_CHECKS |
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#define | FIXED_MUL_I64_I32_I32(a, b) ((i64)(a) * (i64)(b)) |
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#define | CheckSignedSubtractionOverflow(type, left, right, overflowWarning, underflowWarning) |
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#define | CheckSignedAdditionOverflow(type, left, right, overflowWarning, underflowWarning) |
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#define | CheckCastOverflow(var, targetType, overflowWarning, underflowWarning) |
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#define | CheckU32CastOverflow(var, targetType, overflowWarning) |
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#define | CheckUnsignedAdditionOverflow(result, operand, overflowWarning) |
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#define | CheckUnsignedSubtractionOverflow(result, left, overflowWarning) |
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#define | CheckNegationOverflow(var, type, overflowWarning) |
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#define | CheckMultiplicationOverflow(type, left, right, overflowWarning, underflowWarning) |
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#define | CheckDivisionOverflow(type, left, right, overflowWarning) if(right == -1) { CheckNegationOverflow(left, type, overflowWarning) } |
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#define CheckCastOverflow |
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var, |
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targetType, |
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overflowWarning, |
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underflowWarning |
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Value:if(var > std::numeric_limits<targetType>::max())
\ else
if(var < std::numeric_limits<targetType>::min())
\#define debug_warn(expr)
display the error dialog with the given text.
Definition: debug.h:329
#define CheckDivisionOverflow |
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type, |
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left, |
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right, |
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overflowWarning |
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#define CheckMultiplicationOverflow |
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type, |
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left, |
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right, |
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overflowWarning, |
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underflowWarning |
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Value:int64_t i64
Definition: types.h:35
#define CheckCastOverflow(var, targetType, overflowWarning, underflowWarning)
Definition: Fixed.h:66
#define CheckNegationOverflow |
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var, |
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type, |
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overflowWarning |
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Value:if(value == std::numeric_limits<type>::min())
\ #define debug_warn(expr)
display the error dialog with the given text.
Definition: debug.h:329
#define CheckSignedAdditionOverflow |
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type, |
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left, |
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right, |
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overflowWarning, |
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underflowWarning |
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Value:if(left > 0 && right > 0 && std::numeric_limits<type>::max() - left < right)
\ else
if(left < 0 && right < 0 && std::numeric_limits<type>::min() - left > right)
\#define debug_warn(expr)
display the error dialog with the given text.
Definition: debug.h:329
#define CheckSignedSubtractionOverflow |
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type, |
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left, |
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right, |
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overflowWarning, |
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underflowWarning |
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Value:if(left > 0 && right < 0 && left > std::numeric_limits<type>::max() + right)
\ else
if(left < 0 && right > 0 && left < std::numeric_limits<type>::min() + right)
\#define debug_warn(expr)
display the error dialog with the given text.
Definition: debug.h:329
#define CheckU32CastOverflow |
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var, |
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targetType, |
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overflowWarning |
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Value:if(var > (
u32)std::numeric_limits<targetType>::max())
\ uint32_t u32
Definition: types.h:39
#define debug_warn(expr)
display the error dialog with the given text.
Definition: debug.h:329
#define CheckUnsignedAdditionOverflow |
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result, |
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operand, |
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overflowWarning |
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Value:#define debug_warn(expr)
display the error dialog with the given text.
Definition: debug.h:329
#define CheckUnsignedSubtractionOverflow |
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result, |
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left, |
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overflowWarning |
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Value:#define debug_warn(expr)
display the error dialog with the given text.
Definition: debug.h:329
#define FIXED_MUL_I64_I32_I32 |
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a, |
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b |
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#define USE_FIXED_OVERFLOW_CHECKS |
typedef CFixed<i32, (i32)0x7fffffff, 32, 15, 16, 65536> CFixed_15_16 |
A fixed-point number class with 1-bit sign, 15-bit integral part, 16-bit fractional part.
Default fixed-point type used by the engine.
Inaccurate approximation of atan2 over fixed-point numbers.
Maximum error is almost 0.08 radians (4.5 degrees).
template<typename T >
T round_away_from_zero |
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float |
value | ) |
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inline |
template<typename T >
T round_away_from_zero |
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double |
value | ) |
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inline |
Compute sin(a) and cos(a).
Maximum error for -2pi < a < 2pi is almost 0.0005.