diff options
Diffstat (limited to 'mesalib/src/mesa/main/imports.h')
| -rw-r--r-- | mesalib/src/mesa/main/imports.h | 32 |
1 files changed, 8 insertions, 24 deletions
diff --git a/mesalib/src/mesa/main/imports.h b/mesalib/src/mesa/main/imports.h index 09e55ebf0..59fd19c36 100644 --- a/mesalib/src/mesa/main/imports.h +++ b/mesalib/src/mesa/main/imports.h @@ -164,7 +164,6 @@ INV_SQRTF(float x) ***/ static inline GLfloat LOG2(GLfloat x) { -#ifdef USE_IEEE #if 0 /* This is pretty fast, but not accurate enough (only 2 fractional bits). * Based on code from http://www.stereopsis.com/log2.html @@ -186,13 +185,6 @@ static inline GLfloat LOG2(GLfloat x) num.i += 127 << 23; num.f = ((-1.0f/3) * num.f + 2) * num.f - 2.0f/3; return num.f + log_2; -#else - /* - * NOTE: log_base_2(x) = log(x) / log(2) - * NOTE: 1.442695 = 1/log(2). - */ - return (GLfloat) (log(x) * 1.442695F); -#endif } @@ -200,14 +192,7 @@ static inline GLfloat LOG2(GLfloat x) /*** *** IS_INF_OR_NAN: test if float is infinite or NaN ***/ -#ifdef USE_IEEE -static inline int IS_INF_OR_NAN( float x ) -{ - fi_type tmp; - tmp.f = x; - return !(int)((unsigned int)((tmp.i & 0x7fffffff)-0x7f800000) >> 31); -} -#elif defined(isfinite) +#if defined(isfinite) #define IS_INF_OR_NAN(x) (!isfinite(x)) #elif defined(finite) #define IS_INF_OR_NAN(x) (!finite(x)) @@ -321,7 +306,7 @@ static inline int IFLOOR(float f) __asm__ ("fstps %0" : "=m" (ai) : "t" (af) : "st"); __asm__ ("fstps %0" : "=m" (bi) : "t" (bf) : "st"); return (ai - bi) >> 1; -#elif defined(USE_IEEE) +#else int ai, bi; double af, bf; fi_type u; @@ -330,9 +315,6 @@ static inline int IFLOOR(float f) u.f = (float) af; ai = u.i; u.f = (float) bf; bi = u.i; return (ai - bi) >> 1; -#else - int i = IROUND(f); - return (i > f) ? i - 1 : i; #endif } @@ -356,7 +338,7 @@ static inline int ICEIL(float f) __asm__ ("fstps %0" : "=m" (ai) : "t" (af) : "st"); __asm__ ("fstps %0" : "=m" (bi) : "t" (bf) : "st"); return (ai - bi + 1) >> 1; -#elif defined(USE_IEEE) +#else int ai, bi; double af, bf; fi_type u; @@ -365,9 +347,6 @@ static inline int ICEIL(float f) u.f = (float) af; ai = u.i; u.f = (float) bf; bi = u.i; return (ai - bi + 1) >> 1; -#else - int i = IROUND(f); - return (i < f) ? i + 1 : i; #endif } @@ -552,6 +531,11 @@ _mesa_float_to_half(float f); extern float _mesa_half_to_float(GLhalfARB h); +static inline bool +_mesa_half_is_negative(GLhalfARB h) +{ + return h & 0x8000; +} extern void * _mesa_bsearch( const void *key, const void *base, size_t nmemb, size_t size, |