Zilog ZUSBOPTS Manual do Utilizador descarregar pdf (Página 468)

100

101

Standard Functions UM017105-0511

440

Zilog Developer Studio II – ZNEO™

User Manual

setjmp

Saves its calling environment in its jmp_buf argument, for later use by the longjmp 

function.

Synopsis

#include<setjmp.h>

int setjmp(jmp_buf env);

Returns

If the return is from a direct invocation, the setjmp function returns the value zero. If the

return is from a call to the

longjmp function, the setjmp function returns a nonzero

value.

Example

int i;

jmp_buf env;

i=setjmp(env);

longjmp(env, i);

sin, sinf

Computes the sine of x (measured in radians). A large magnitude argument can yield a

result with little or no significance.

Synopsis

#include <math.h>

double sin(double x);

float sinf(float x);

Returns

The sine value.

Example

double x=1.24;

double y;

y=sin(x);

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