1*0a6a1f1dSLionel Sambuc #ifndef __DD_HEADER 2*0a6a1f1dSLionel Sambuc #define __DD_HEADER 3*0a6a1f1dSLionel Sambuc 4*0a6a1f1dSLionel Sambuc #include "../int_lib.h" 5*0a6a1f1dSLionel Sambuc 6*0a6a1f1dSLionel Sambuc typedef union { 7*0a6a1f1dSLionel Sambuc long double ld; 8*0a6a1f1dSLionel Sambuc struct { 9*0a6a1f1dSLionel Sambuc double hi; 10*0a6a1f1dSLionel Sambuc double lo; 11*0a6a1f1dSLionel Sambuc }s; 12*0a6a1f1dSLionel Sambuc }DD; 13*0a6a1f1dSLionel Sambuc 14*0a6a1f1dSLionel Sambuc typedef union { 15*0a6a1f1dSLionel Sambuc double d; 16*0a6a1f1dSLionel Sambuc uint64_t x; 17*0a6a1f1dSLionel Sambuc } doublebits; 18*0a6a1f1dSLionel Sambuc 19*0a6a1f1dSLionel Sambuc #define LOWORDER(xy,xHi,xLo,yHi,yLo) \ 20*0a6a1f1dSLionel Sambuc (((((xHi)*(yHi) - (xy)) + (xHi)*(yLo)) + (xLo)*(yHi)) + (xLo)*(yLo)) 21*0a6a1f1dSLionel Sambuc 22*0a6a1f1dSLionel Sambuc static inline double __attribute__((always_inline)) local_fabs(double x)23*0a6a1f1dSLionel Sambuclocal_fabs(double x) 24*0a6a1f1dSLionel Sambuc { 25*0a6a1f1dSLionel Sambuc doublebits result = { .d = x }; 26*0a6a1f1dSLionel Sambuc result.x &= UINT64_C(0x7fffffffffffffff); 27*0a6a1f1dSLionel Sambuc return result.d; 28*0a6a1f1dSLionel Sambuc } 29*0a6a1f1dSLionel Sambuc 30*0a6a1f1dSLionel Sambuc static inline double __attribute__((always_inline)) high26bits(double x)31*0a6a1f1dSLionel Sambuchigh26bits(double x) 32*0a6a1f1dSLionel Sambuc { 33*0a6a1f1dSLionel Sambuc doublebits result = { .d = x }; 34*0a6a1f1dSLionel Sambuc result.x &= UINT64_C(0xfffffffff8000000); 35*0a6a1f1dSLionel Sambuc return result.d; 36*0a6a1f1dSLionel Sambuc } 37*0a6a1f1dSLionel Sambuc 38*0a6a1f1dSLionel Sambuc static inline int __attribute__((always_inline)) different_sign(double x,double y)39*0a6a1f1dSLionel Sambucdifferent_sign(double x, double y) 40*0a6a1f1dSLionel Sambuc { 41*0a6a1f1dSLionel Sambuc doublebits xsignbit = { .d = x }, ysignbit = { .d = y }; 42*0a6a1f1dSLionel Sambuc int result = (int)(xsignbit.x >> 63) ^ (int)(ysignbit.x >> 63); 43*0a6a1f1dSLionel Sambuc return result; 44*0a6a1f1dSLionel Sambuc } 45*0a6a1f1dSLionel Sambuc 46*0a6a1f1dSLionel Sambuc #endif /* __DD_HEADER */ 47