blob: 63ed17536899d1f9e259feb2b2a9951b3691c9e7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
#include "f2c.h"
#ifdef KR_headers
#ifdef IEEE_drem
double drem();
#else
double floor();
#endif
double r_mod(x,y) real *x, *y;
#else
#ifdef IEEE_drem
double drem(double, double);
#else
#undef abs
#include "math.h"
#ifdef __cplusplus
extern "C" {
#endif
#endif
double r_mod(real *x, real *y)
#endif
{
#ifdef IEEE_drem
double xa, ya, z;
if ((ya = *y) < 0.)
ya = -ya;
z = drem(xa = *x, ya);
if (xa > 0) {
if (z < 0)
z += ya;
}
else if (z > 0)
z -= ya;
return z;
#else
double quotient;
if( (quotient = (double)*x / *y) >= 0)
quotient = floor(quotient);
else
quotient = -floor(-quotient);
return(*x - (*y) * quotient );
#endif
}
#ifdef __cplusplus
}
#endif
|
