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Mac Power 1997 October
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MACPOWER-1997-10.ISO.7z
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AMUG
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PROGRAMMING
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Mac F2C 1.3.5.sit
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Mac F2C 1.3.5
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Mac F2C Libraries
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libF77 Sources
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cabs.c
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1995-01-28
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427b
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28 lines
#ifdef KR_headers
extern double sqrt();
double f__cabs(real, imag) double real, imag;
#else
#undef abs
#include "math.h"
double f__cabs(double real, double imag)
#endif
{
double temp;
if(real < 0)
real = -real;
if(imag < 0)
imag = -imag;
if(imag > real){
temp = real;
real = imag;
imag = temp;
}
if((real+imag) == real)
return(real);
temp = imag/real;
temp = real*sqrt(1.0 + temp*temp); /*overflow!!*/
return(temp);
}