|
Last change
on this file since 3 was 2, checked in by bird, 23 years ago |
|
Initial revision
|
-
Property cvs2svn:cvs-rev
set to
1.1
-
Property svn:eol-style
set to
native
-
Property svn:executable
set to
*
|
|
File size:
621 bytes
|
| Line | |
|---|
| 1 | #include "f2c.h"
|
|---|
| 2 |
|
|---|
| 3 | #ifdef KR_headers
|
|---|
| 4 | #ifdef IEEE_drem
|
|---|
| 5 | double drem();
|
|---|
| 6 | #else
|
|---|
| 7 | double floor();
|
|---|
| 8 | #endif
|
|---|
| 9 | double d_mod(x,y) doublereal *x, *y;
|
|---|
| 10 | #else
|
|---|
| 11 | #ifdef IEEE_drem
|
|---|
| 12 | double drem(double, double);
|
|---|
| 13 | #else
|
|---|
| 14 | #undef abs
|
|---|
| 15 | #include <math.h>
|
|---|
| 16 | #endif
|
|---|
| 17 | double d_mod(doublereal *x, doublereal *y)
|
|---|
| 18 | #endif
|
|---|
| 19 | {
|
|---|
| 20 | #ifdef IEEE_drem
|
|---|
| 21 | double xa, ya, z;
|
|---|
| 22 | if ((ya = *y) < 0.)
|
|---|
| 23 | ya = -ya;
|
|---|
| 24 | z = drem(xa = *x, ya);
|
|---|
| 25 | if (xa > 0) {
|
|---|
| 26 | if (z < 0)
|
|---|
| 27 | z += ya;
|
|---|
| 28 | }
|
|---|
| 29 | else if (z > 0)
|
|---|
| 30 | z -= ya;
|
|---|
| 31 | return z;
|
|---|
| 32 | #else
|
|---|
| 33 | double quotient;
|
|---|
| 34 | if( (quotient = *x / *y) >= 0)
|
|---|
| 35 | quotient = floor(quotient);
|
|---|
| 36 | else
|
|---|
| 37 | quotient = -floor(-quotient);
|
|---|
| 38 | return(*x - (*y) * quotient );
|
|---|
| 39 | #endif
|
|---|
| 40 | }
|
|---|
Note:
See
TracBrowser
for help on using the repository browser.
