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35 * @(#)mathimpl.h 8.1 (Berkeley) 6/4/93
42 #include <sys/cdefs.h>
45 #include "../src/math_private.h"
48 * TRUNC() is a macro that sets the trailing 27 bits in the mantissa of an
49 * IEEE double variable to zero. It must be expression-like for syntactic
50 * reasons, and we implement this expression using an inline function
51 * instead of a pure macro to avoid depending on the gcc feature of
52 * statement-expressions.
54 #define TRUNC(d) (_b_trunc(&(d)))
57 _b_trunc(volatile double *_dp)
61 GET_LOW_WORD(_lw, *_dp);
62 SET_LOW_WORD(*_dp, _lw & 0xf8000000);
71 * Functions internal to the math package, yet not static.
73 double __exp__D(double, double);
74 struct Double __log__D(double);
76 #endif /* !_MATHIMPL_H_ */