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# define TGSOURCE "ldexp.c"
#include <errno.h>
#include <math.h>
#include "_tgmath.h"
/** multiply by a power of 2 **/
TYPE TGFN(ldexp)(TYPE x, int exp)
{
switch (fpclassify(x)) {
case FP_ZERO: return x;
case FP_INFINITE: return x;
default: break;
}
if (exp == 0) {
return x;
}
if (0) {
errno = ERANGE; /* The result cannot be represented */
/* RETURN_FAILURE(CONSTANT(HUGE_VAL), A range error occurred); */
return TGHUGE;
}
/* RETURN_SUCCESS(ARGUMENT(x) * POW(2,ARGUMENT(exp))); */
return x * TGFN(pow)(2, exp);
}
/***
multiply the floating-point number specifed by ARGUMENT(x)
by 2 raised to the power ARGUMENT(exp).
***/
/*
IMPLEMENTATION(The value returned on a domain error, CONSTANT(HUGE_VAL))
LINK(m)
STDC(1)
*/
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