mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 11:43:34 +08:00
151 lines
3.2 KiB
C
151 lines
3.2 KiB
C
#include <ansidecl.h>
|
||
#include <stdio.h>
|
||
#include <math.h>
|
||
#include <stdlib.h>
|
||
#include <errno.h>
|
||
#include <string.h>
|
||
|
||
void print_trig_stuff __P ((void));
|
||
|
||
int
|
||
DEFUN_VOID(main)
|
||
{
|
||
CONST char str[] = "123.456";
|
||
double x,h,li,lr,a,lrr;
|
||
|
||
x = atof (str);
|
||
|
||
printf ("%g %g\n", x, pow (10.0, 3.0));
|
||
|
||
x = sinh(2.0);
|
||
|
||
printf("sinh(2.0) = %g\n", x);
|
||
|
||
x = sinh(3.0);
|
||
|
||
printf("sinh(3.0) = %g\n", x);
|
||
|
||
h = hypot(2.0,3.0);
|
||
|
||
printf("h=%g\n", h);
|
||
|
||
a = atan2(3.0, 2.0);
|
||
|
||
printf("atan2(3,2) = %g\n", a);
|
||
|
||
lr = pow(h,4.0);
|
||
|
||
printf("pow(%g,4.0) = %g\n", h, lr);
|
||
|
||
lrr = lr;
|
||
|
||
li = 4.0 * a;
|
||
|
||
lr = lr / exp(a*5.0);
|
||
|
||
printf("%g / exp(%g * 5) = %g\n", lrr, a, lr);
|
||
|
||
lrr = li;
|
||
|
||
li += 5.0 * log(h);
|
||
|
||
printf("%g + 5*log(%g) = %g\n", lrr, h, li);
|
||
|
||
printf("cos(%g) = %g, sin(%g) = %g\n", li, cos(li), li, sin(li));
|
||
|
||
x = drem(10.3435,6.2831852);
|
||
|
||
printf("drem(10.3435,6.2831852) = %g\n", x);
|
||
|
||
x = drem(-10.3435,6.2831852);
|
||
|
||
printf("drem(-10.3435,6.2831852) = %g\n", x);
|
||
|
||
x = drem(-10.3435,-6.2831852);
|
||
|
||
printf("drem(-10.3435,-6.2831852) = %g\n", x);
|
||
|
||
x = drem(10.3435,-6.2831852);
|
||
|
||
printf("drem(10.3435,-6.2831852) = %g\n", x);
|
||
|
||
|
||
printf("x%8.6gx\n", .5);
|
||
printf("x%-8.6gx\n", .5);
|
||
printf("x%6.6gx\n", .5);
|
||
|
||
{
|
||
double x = atof ("-1e-17-");
|
||
printf ("%g %c= %g %s!\n",
|
||
x,
|
||
x == -1e-17 ? '=' : '!',
|
||
-1e-17,
|
||
x == -1e-17 ? "Worked" : "Failed");
|
||
}
|
||
|
||
print_trig_stuff ();
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
#define PI 3.14159265358979323846264338327
|
||
|
||
const double RAD[5] = { 0, PI/2, PI, (3*PI)/2, 2*PI };
|
||
const int DEG[5] = { 0, 90, 180, 360 };
|
||
|
||
#define PRINT_IT_1_ARG(_func, _arg, _value) \
|
||
(_value) = (_func)((_arg)); \
|
||
if (errno) { \
|
||
errno = 0; \
|
||
printf("%s = ERROR %s\n", #_func, strerror(errno)); \
|
||
} else \
|
||
printf("%s(%g) = %g\n", #_func, _arg, (_value)); \
|
||
|
||
#define PRINT_IT_2_ARG(_func, _arg1, _arg2, _value) \
|
||
(_value) = (_func)((_arg1),(_arg2)); \
|
||
if (errno) { \
|
||
errno = 0; \
|
||
printf("%s = ERROR %s\n", #_func, strerror(errno)); \
|
||
} else \
|
||
printf("%s(%g, %g) = %g\n", #_func, _arg1, _arg2, (_value)); \
|
||
|
||
void
|
||
DEFUN_VOID (print_trig_stuff)
|
||
{
|
||
double value, arg1, arg2;
|
||
int i;
|
||
|
||
puts ("\n\nMath Test");
|
||
|
||
errno = 0; /* automatically reset on error condition */
|
||
for (i=0; i<4; i++)
|
||
{
|
||
PRINT_IT_1_ARG (sin, RAD[i], value);
|
||
PRINT_IT_1_ARG (cos, RAD[i], value);
|
||
PRINT_IT_1_ARG (tan, RAD[i], value);
|
||
PRINT_IT_1_ARG (asin, RAD[i], value);
|
||
PRINT_IT_1_ARG (acos, RAD[i], value);
|
||
PRINT_IT_1_ARG (atan, RAD[i], value);
|
||
PRINT_IT_2_ARG (atan2, RAD[i], -RAD[i % 4], value);
|
||
}
|
||
|
||
arg1 = 16;
|
||
arg2 = 3;
|
||
PRINT_IT_1_ARG (exp, arg1, value);
|
||
PRINT_IT_1_ARG (log, arg1, value);
|
||
PRINT_IT_1_ARG (log10, arg1, value);
|
||
PRINT_IT_2_ARG (pow, arg1, arg2, value);
|
||
PRINT_IT_1_ARG (sqrt, arg1, value);
|
||
PRINT_IT_1_ARG (cbrt, arg1, value);
|
||
PRINT_IT_2_ARG (hypot, arg1, arg2, value);
|
||
PRINT_IT_1_ARG (expm1, arg1, value);
|
||
PRINT_IT_1_ARG (log1p, arg1, value);
|
||
PRINT_IT_1_ARG (sinh, arg1, value);
|
||
PRINT_IT_1_ARG (cosh, arg1, value);
|
||
PRINT_IT_1_ARG (tanh, arg1, value);
|
||
PRINT_IT_1_ARG (asinh, arg1, value);
|
||
PRINT_IT_1_ARG (acosh, arg1, value);
|
||
PRINT_IT_1_ARG (atanh, arg1, value);
|
||
}
|