#define isfinite(x) _finite((double)(x))
#define isnan(x) _isnan((double)(x))
-#endif
+#endif /* _MSC_VER < 1400 && !defined(__cplusplus) */
static INLINE double log2( double x )
{
return log( x ) * invln2;
}
+static INLINE double
+round(double x)
+{
+ return x >= 0.0 ? floor(x + 0.5) : ceil(x - 0.5);
+}
+
+static INLINE float
+roundf(float x)
+{
+ return x >= 0.0f ? floorf(x + 0.5f) : ceilf(x - 0.5f);
+}
+
#endif /* _MSC_VER */
#define ffs __builtin_ffs
#endif
-#ifdef __MINGW32__
-#define ffs __builtin_ffs
-#endif
-
-
-/* Could also binary search for the highest bit.
- */
-static INLINE unsigned
-util_unsigned_logbase2(unsigned n)
-{
- unsigned log2 = 0;
- while (n >>= 1)
- ++log2;
- return log2;
-}
-
/**
* Return float bits.
}
}
+static INLINE float
+byte_to_float_tex(int8_t b)
+{
+ return (b == -128) ? -1.0F : b * 1.0F / 127.0F;
+}
+
+static INLINE int8_t
+float_to_byte_tex(float f)
+{
+ return (int8_t) (127.0F * f);
+}
/**
* Calc log base 2
static INLINE unsigned
util_logbase2(unsigned n)
{
- unsigned log2 = 0;
- while (n >>= 1)
- ++log2;
- return log2;
+#if defined(PIPE_CC_GCC) && (PIPE_CC_GCC_VERSION >= 304)
+ return ((sizeof(unsigned) * 8 - 1) - __builtin_clz(n | 1));
+#else
+ unsigned pos = 0;
+ if (n >= 1<<16) { n >>= 16; pos += 16; }
+ if (n >= 1<< 8) { n >>= 8; pos += 8; }
+ if (n >= 1<< 4) { n >>= 4; pos += 4; }
+ if (n >= 1<< 2) { n >>= 2; pos += 2; }
+ if (n >= 1<< 1) { pos += 1; }
+ return pos;
+#endif
}
static INLINE unsigned
util_next_power_of_two(unsigned x)
{
- unsigned i;
-
- if (x == 0)
- return 1;
+#if defined(PIPE_CC_GCC) && (PIPE_CC_GCC_VERSION >= 304)
+ if (x <= 1)
+ return 1;
- --x;
+ return (1 << ((sizeof(unsigned) * 8) - __builtin_clz(x - 1)));
+#else
+ unsigned val = x;
- for (i = 1; i < sizeof(unsigned) * 8; i <<= 1)
- x |= x >> i;
+ if (x <= 1)
+ return 1;
- return x + 1;
+ if (util_is_power_of_two(x))
+ return x;
+
+ val--;
+ val = (val >> 1) | val;
+ val = (val >> 2) | val;
+ val = (val >> 4) | val;
+ val = (val >> 8) | val;
+ val = (val >> 16) | val;
+ val++;
+ return val;
+#endif
}
static INLINE unsigned
util_bitcount(unsigned n)
{
-#if defined(PIPE_CC_GCC)
+#if defined(PIPE_CC_GCC) && (PIPE_CC_GCC_VERSION >= 304)
return __builtin_popcount(n);
#else
/* K&R classic bitcount.
#define MIN2( A, B ) ( (A)<(B) ? (A) : (B) )
#define MAX2( A, B ) ( (A)>(B) ? (A) : (B) )
-#define MIN3( A, B, C ) MIN2( MIN2( A, B ), C )
-#define MAX3( A, B, C ) MAX2( MAX2( A, B ), C )
+#define MIN3( A, B, C ) ((A) < (B) ? MIN2(A, C) : MIN2(B, C))
+#define MAX3( A, B, C ) ((A) > (B) ? MAX2(A, C) : MAX2(B, C))
-#define MIN4( A, B, C, D ) MIN2( MIN2( A, B ), MIN2(C, D) )
-#define MAX4( A, B, C, D ) MAX2( MAX2( A, B ), MAX2(C, D) )
+#define MIN4( A, B, C, D ) ((A) < (B) ? MIN3(A, C, D) : MIN3(B, C, D))
+#define MAX4( A, B, C, D ) ((A) > (B) ? MAX3(A, C, D) : MAX3(B, C, D))
/**