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Math Lib: Add float/int conversion functions

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This commit is contained in:
Campbell Barton
2015-08-21 17:42:40 +10:00
parent c727fc59ab
commit 7e3781179e
2 changed files with 39 additions and 0 deletions
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6
source/blender/blenlib/BLI_math_bits.h
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@@ -40,6 +40,12 @@ MINLINE unsigned short highest_order_bit_s(unsigned short n);
MINLINE int count_bits_i(unsigned int n);
#endif
MINLINE int float_as_int(float f);
MINLINE unsigned int float_as_uint(float f);
MINLINE float int_as_float(int i);
MINLINE float uint_as_float(unsigned int i);
MINLINE float xor_fl(float x, int y);
#if BLI_MATH_DO_INLINE
#include "intern/math_bits_inline.c"
#endif

33
source/blender/blenlib/intern/math_bits_inline.c
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@@ -56,4 +56,37 @@ MINLINE int count_bits_i(unsigned int i)
}
#endif
MINLINE int float_as_int(float f)
{
union { int i; float f; } u;
u.f = f;
return u.i;
}
MINLINE unsigned int float_as_uint(float f)
{
union { unsigned int i; float f; } u;
u.f = f;
return u.i;
}
MINLINE float int_as_float(int i)
{
union { int i; float f; } u;
u.i = i;
return u.f;
}
MINLINE float uint_as_float(unsigned int i)
{
union { unsigned int i; float f; } u;
u.i = i;
return u.f;
}
MINLINE float xor_fl(float x, int y)
{
return int_as_float(float_as_int(x) ^ y);
}
#endif /* __MATH_BITS_INLINE_C__ */