fmod error

[adamdebek]

Reproduction:

#include <stdio.h>
#include <math.h>
#include <errno.h>

int main(void) {
	errno = 0;
	printf("fmod: %g\n",  fmod(3.43028e+248, 5.81768e+215));
	printf("errno: %d\n", errno);

	errno = 0;
	printf("fmod: %g\n",  fmod(-1.97016e+208, 1.19546e+183));
	printf("errno: %d\n", errno);

	errno = 0;
	printf("fmod: %g\n",  fmod(1.43018e+205, 1.19546e+183));
	printf("errno: %d\n", errno);

	errno = 0;
	printf("fmod: %g\n",  fmod(7.29983e+204, 1.19546e+183));
	printf("errno: %d\n", errno);

	errno = 0;
	printf("fmod: %g\n",  fmod(9.41698e+181, 1.54897e+164));
	printf("errno: %d\n", errno);

	return 0;
}

for each of above pair of arguments, fmod return not valid reminder (greater than passed in second argument)
Its probably due to floating point numbers rounding, implementation do not take it into accout.