src/lib/libm/src/math_private.h - diff

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-version 1.16, 2010/09/16 20:39:50
+version 1.17, 2012/05/05 17:54:14
 Line 275  extern float __kernel_cosf __P((float,fl
 Line 275  extern float __kernel_cosf __P((float,fl
 Line 275  extern float __kernel_cosf __P((float,fl
  extern float __kernel_tanf __P((float,float,int));
  extern int   __kernel_rem_pio2f __P((float*,float*,int,int,int,const int*));
+ /*
+  * TRUNC() is a macro that sets the trailing 27 bits in the mantissa of an
+  * IEEE double variable to zero.  It must be expression-like for syntactic
+  * reasons, and we implement this expression using an inline function
+  * instead of a pure macro to avoid depending on the gcc feature of
+  * statement-expressions.
+  */
+ #define TRUNC(d)        (_b_trunc(&(d)))
+ static __inline void
+ _b_trunc(volatile double *_dp)
+ {
+         uint32_t _lw;
+         GET_LOW_WORD(_lw, *_dp);
+         SET_LOW_WORD(*_dp, _lw & 0xf8000000);
+ }
+ struct Double {
+         double  a;
+         double  b;
+ };
+ /*
+  * Functions internal to the math package, yet not static.
+  */
+ double  __exp__D(double, double);
+ struct Double __log__D(double);
  #endif /* _MATH_PRIVATE_H_ */