00001 #include "f2c.h" 00002 00003 #ifdef KR_headers 00004 double atan2(); 00005 double d_atn2(x,y) doublereal *x, *y; 00006 #else 00007 #undef abs 00008 #include "math.h" 00009 #ifdef __cplusplus 00010 extern "C" { 00011 #endif 00012 double d_atn2(doublereal *x, doublereal *y) 00013 #endif 00014 { 00015 return( atan2(*x,*y) ); 00016 } 00017 #ifdef __cplusplus 00018 } 00019 #endif