ReactOS 0.4.15-dev-5667-ged97270
fabs.c File Reference
#include <math.h>
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Functions

_Check_return_ double __cdecl fabs (_In_ double x)
 

Function Documentation

◆ fabs()

Definition at line 17 of file fabs.c.

19{
20 /* Load the value as uint64 */
21 unsigned long long u64 = *(unsigned long long*)&x;
22
23 /* Clear the sign bit */
24 u64 &= ~(1ULL << 63);
25
26 /* Check for NAN */
27 if (u64 > 0x7FF0000000000000ull)
28 {
29#ifdef _M_IX86
30 /* Set error bit */
31 *(unsigned long long*)&x |= 0x0008000000000000ull;
32#endif
33 return x;
34 }
35
36 /* Convert back to double */
37 return *(double*)&u64;
38}
ULONG64 u64
Definition: btrfs.h:15
GLint GLint GLint GLint GLint x
Definition: gl.h:1548

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