Zilog Z8F0130 - Manual (Page 470)

Appendix B. C Standard Library UM013037-1212
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Zilog Developer Studio II – Z8 Encore!
User Manual
Example
double x=1.235

int exp=2;

double y;

y=ldexp(x,exp);
ldiv
Computes the quotient and remainder of the division of the numerator numer by the
denominator denom . If the division is inexact, the sign of the quotient is that of the mathe-
matical quotient, and the magnitude of the quotient is the largest integer less than the mag-
nitude of the mathematical quotient.
Synopsis
#include

ldiv_t ldiv(long numer, long denom);
Example
long x=25000;

long y=300;

div_t t;

int q;

int r;

t=ldiv(x,y);

q=t.quot;

r=t.rem;
log
Computes the natural logarithm of x. A domain error occurs if the argument is negative. A
range error occurs if the argument is zero.
Synopsis
#include

double log(double x);
Returns
The natural logarithm.
Example
double x=2.56;

double y;

y=log(x);