o_195h4n6al16jb186b1b2qs7fgssa.pdf

errno = 0;
x = 1.0E3F;
y = expf (x);
if (errno)
perror("Error");
printf("The exponential of %f is %f\n\n", x, y);
errno = 0;
x = -1.0E3F;
y = expf (x);
if (errno)
perror("Error");
printf("The exponential of %f is %f\n\n", x, y);
}
Output:
The exponential of 1.000000 is 2.718282
Error: range error
The exponential of 1000.000000 is inf
Error: range error
The exponential of -1000.000000 is 0.000000
Standard C Libraries with Math Functions
2004 Microchip Technology Inc. DS51456B-page 339
fabs
Description: Calculates the absolute value of a double precision floating point
value.
Include:
Prototype: double fabs(double x);
Argument: x floating point value for which toreturn the absolute value
Return Value: Returns the absolute value of x. (A negative number is returned
as
positive, a positive number is unchanged.)
Remarks: No domain or rangeerror will occur.
Example: #include /*for fabs */
#include /* for printf */
int main(void)
{
double x, y;
x = 1.75;
y = fabs (x);
printf("The absolute value of %f is %f\n", x, y);
x = -1.5;
if (errno)
perror ("Lỗi");
printf ("Đối với fmod (% f, f%) còn lại là% f \ n \ n",
x, y, z);
floorf (Tiếp theo)
dsPIC
®
Thư viện Công cụ Ngôn ngữ
DS51456B trang 342 2004 Microchip Technology Inc
errno = 0;
x = 7,0;
y = 7.0;
z = fmod (x, y);
if (errno)
perror ("Lỗi");
printf ("Đối với fmod (% f, f%) còn lại là% f \ n \ n",
x, y, z);
errno = 0;
x = -5,0;
y = 3,0;
z = fmod (x, y);
if (errno)
perror ("Lỗi");
printf ("Đối với fmod (% f, f%) còn lại là% f \ n \ n",
x, y, z);
errno = 0;
x = 5,0;
y = -3,0;
z = fmod (x, y);
if (errno)
perror ("Lỗi");
printf ("Đối với fmod (% f, f%) còn lại là% f \ n \ n",
x, y, z);
errno = 0;
x = -5,0;
y = -5,0;
z = fmod (x, y);
if (errno)
perror ("Lỗi");