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d_sign.c

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00001 #include "f2c.h"
00002 
00003 #ifdef KR_headers
00004 double d_sign(a,b) doublereal *a, *b;
00005 #else
00006 double d_sign(doublereal *a, doublereal *b)
00007 #endif
00008 {
00009 double x;
00010 x = (*a >= 0 ? *a : - *a);
00011 return( *b >= 0 ? x : -x);
00012 }
 
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