File: r_sign.c

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libf2c2 20130926-3
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#include "f2c.h"
#ifdef __cplusplus
extern "C" {
#endif

#ifdef KR_headers
double r_sign(a,b) real *a, *b;
#else
double r_sign(real *a, real *b)
#endif
{
double x;
x = (*a >= 0 ? *a : - *a);
return( *b >= 0 ? x : -x);
}
#ifdef __cplusplus
}
#endif