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Fix a strict-aliasing violation

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See #5035, based on a commit by @miller-alex
This commit is contained in:
Alayan 2024-05-10 15:48:37 +02:00
parent 0542e6b279
commit 185772ca4a
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1 changed files with 29 additions and 14 deletions
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43
lib/bullet/src/BulletCollision/Gimpact/gim_math.h
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@ -32,6 +32,7 @@ email: projectileman@yahoo.com
-----------------------------------------------------------------------------
*/
#include <string.h>
#include "LinearMath/btScalar.h"
@ -56,21 +57,21 @@ email: projectileman@yahoo.com
#define G_ROOT2 1.41421f
#define G_UINT_INFINITY 0xffffffff //!< A very very high value
#define G_REAL_INFINITY FLT_MAX
#define G_SIGN_BITMASK 0x80000000
#define G_SIGN_BITMASK 0x80000000
#define G_EPSILON SIMD_EPSILON
enum GIM_SCALAR_TYPES
{
G_STYPE_REAL =0,
G_STYPE_REAL2,
G_STYPE_SHORT,
G_STYPE_USHORT,
G_STYPE_INT,
G_STYPE_UINT,
G_STYPE_INT64,
G_STYPE_UINT64
G_STYPE_REAL =0,
G_STYPE_REAL2,
G_STYPE_SHORT,
G_STYPE_USHORT,
G_STYPE_INT,
G_STYPE_UINT,
G_STYPE_INT64,
G_STYPE_UINT64
};
@ -78,17 +79,31 @@ enum GIM_SCALAR_TYPES
#define G_DEGTORAD(X) ((X)*3.1415926f/180.0f)
#define G_RADTODEG(X) ((X)*180.0f/3.1415926f)
static GUINT gim_ir__(float r)
{
GUINT i;
memcpy(&i, &r, sizeof(i));
return i;
}
static GREAL gim_fr__(GUINT i)
{
float r;
memcpy(&r, &i, sizeof(r));
return r;
}
//! Integer representation of a floating-point value.
#define GIM_IR(x) ((GUINT&)(x))
#define GIM_IR(x) (gim_ir__(x))
//! Signed integer representation of a floating-point value.
#define GIM_SIR(x) ((GINT&)(x))
#define GIM_SIR(x) ((GINT)gim_ir__(x))
//! Absolute integer representation of a floating-point value
#define GIM_AIR(x) (GIM_IR(x)&0x7fffffff)
#define GIM_AIR(x) (gim_ir__(x) & 0x7fffffff)
//! Floating-point representation of an integer value.
#define GIM_FR(x) ((GREAL&)(x))
#define GIM_FR(x) (gim_fr__(x))
#define GIM_MAX(a,b) (a<b?b:a)
#define GIM_MIN(a,b) (a>b?b:a)
@ -107,7 +122,7 @@ enum GIM_SCALAR_TYPES
///returns a clamped number
#define GIM_CLAMP(number,minval,maxval) (number<minval?minval:(number>maxval?maxval:number))
#define GIM_GREATER(x, y) btFabs(x) > (y)
#define GIM_GREATER(x, y) btFabs(x) > (y)
///Swap numbers
#define GIM_SWAP_NUMBERS(a,b){ \