mewin/glm
1
0
Fork 0
Code Releases Activity

Fixed space characters

Browse Source
This commit is contained in:
Christophe Riccio
2013-03-10 19:34:21 +01:00
parent cc60e7d230
commit 6c4ae0d241
1 changed files with 20 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
glm/gtx/integer.inl
View File

@@ -171,31 +171,31 @@ namespace _detail
// Hackers Delight: http://www.hackersdelight.org/HDcode/nlz.c.txt // Hackers Delight: http://www.hackersdelight.org/HDcode/nlz.c.txt
GLM_FUNC_QUALIFIER unsigned int nlz(unsigned int x) GLM_FUNC_QUALIFIER unsigned int nlz(unsigned int x)
{ {
int y, m, n; int y, m, n;
y = -int(x >> 16); // If left half of x is 0, y = -int(x >> 16); // If left half of x is 0,
m = (y >> 16) & 16; // set n = 16. If left half m = (y >> 16) & 16; // set n = 16. If left half
n = 16 - m; // is nonzero, set n = 0 and n = 16 - m; // is nonzero, set n = 0 and
x = x >> m; // shift x right 16. x = x >> m; // shift x right 16.
// Now x is of the form 0000xxxx. // Now x is of the form 0000xxxx.
y = x - 0x100; // If positions 8-15 are 0, y = x - 0x100; // If positions 8-15 are 0,
m = (y >> 16) & 8; // add 8 to n and shift x left 8. m = (y >> 16) & 8; // add 8 to n and shift x left 8.
n = n + m; n = n + m;
x = x << m; x = x << m;
y = x - 0x1000; // If positions 12-15 are 0, y = x - 0x1000; // If positions 12-15 are 0,
m = (y >> 16) & 4; // add 4 to n and shift x left 4. m = (y >> 16) & 4; // add 4 to n and shift x left 4.
n = n + m; n = n + m;
x = x << m; x = x << m;
y = x - 0x4000; // If positions 14-15 are 0, y = x - 0x4000; // If positions 14-15 are 0,
m = (y >> 16) & 2; // add 2 to n and shift x left 2. m = (y >> 16) & 2; // add 2 to n and shift x left 2.
n = n + m; n = n + m;
x = x << m; x = x << m;
y = x >> 14; // Set y = 0, 1, 2, or 3. y = x >> 14; // Set y = 0, 1, 2, or 3.
m = y & ~(y >> 1); // Set m = 0, 1, 2, or 2 resp. m = y & ~(y >> 1); // Set m = 0, 1, 2, or 2 resp.
return unsigned(n + 2 - m); return unsigned(n + 2 - m);
} }
#endif//(GLM_COMPILER) #endif//(GLM_COMPILER)