double sin(double x); sine 계산
float sinf(float x); sine 계산
long double sinl(long double x); sine 계산
입력 매개 변수 리스트
x radian
반환 값
sine 값
사용 예
//C언어 표준 라이브러리 함수 가이드
//double sin(double x); sine 계산
//float sinf(float x); sine 계산
//long double sinl(long double x); sine 계산
//0, 30, 45, 60, 90도의 sine 값
#include <math.h>
#include <stdio.h>
int main(void)
{
double radian;
radian = 0.0;
printf("%f 도\n", radian * 180 / 3.141592);
printf("sin(%f) = %.30f\n", radian, sin(radian));
printf("sinf(%f) = %.30f\n", radian, sinf((float)radian));
printf("sinl(%f) = %.30f\n", radian, sinl(radian));
radian = 30 * 3.141592 / 180;
printf("%f 도\n", radian * 180 / 3.141592);
printf("sin(%f) = %.30f\n", radian, sin(radian));
printf("sinf(%f) = %.30f\n", radian, sinf((float)radian));
printf("sinl(%f) = %.30f\n", radian, sinl(radian));
radian = 45 * 3.141592 / 180;
printf("%f 도\n", radian * 180 / 3.141592);
printf("sin(%f) = %.30f\n", radian, sin(radian));
printf("sinf(%f) = %.30f\n", radian, sinf((float)radian));
printf("sinl(%f) = %.30f\n", radian, sinl(radian));
radian = 60 * 3.141592 / 180;
printf("%f 도\n", radian * 180 / 3.141592);
printf("sin(%f) = %.30f\n", radian, sin(radian));
printf("sinf(%f) = %.30f\n", radian, sinf((float)radian));
printf("sinl(%f) = %.30f\n", radian, sinl(radian));
radian = 90 * 3.141592 / 180;
printf("%f 도\n", radian * 180 / 3.141592);
printf("sin(%f) = %.30f\n", radian, sin(radian));
printf("sinf(%f) = %.30f\n", radian, sinf((float)radian));
printf("sinl(%f) = %.30f\n", radian, sinl(radian));
return 0;
}
출력
0.000000 도 sin(0.000000) = 0.000000000000000000000000000000 sinf(0.000000) = 0.000000000000000000000000000000 sinl(0.000000) = 0.000000000000000000000000000000 30.000000 도 sin(0.523599) = 0.499999905662436239239809765422 sinf(0.523599) = 0.499999910593032836914062500000 sinl(0.523599) = 0.499999905662436239239809765422 45.000000 도 sin(0.785398) = 0.707106665647094345672485360410 sinf(0.785398) = 0.707106649875640869140625000000 sinl(0.785398) = 0.707106665647094345672485360410 60.000000 도 sin(1.047197) = 0.866025294852785898491731586546 sinf(1.047197) = 0.866025328636169433593750000000 sinl(1.047197) = 0.866025294852785898491731586546 90.000000 도 sin(1.570796) = 0.999999999999946598272515529970 sinf(1.570796) = 1.000000000000000000000000000000 sinl(1.570796) = 0.999999999999946598272515529970