📄 hypot.c
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#include <math.h>/* * sqrt(a^2 + b^2) * (but carefully) */doublehypot(double a, double b){ double t; if(a < 0) a = -a; if(b < 0) b = -b; if(a > b) { t = a; a = b; b = t; } if(b == 0) return 0; a /= b; /* * pathological overflow possible * in the next line. */ return b * sqrt(1 + a*a);}
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