File: c_log.c

package info (click to toggle)
iraf 2.17-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 95,288 kB
  • sloc: ansic: 228,894; fortran: 75,606; lisp: 18,369; xml: 8,401; sh: 6,111; yacc: 5,648; lex: 596; makefile: 575; asm: 153; csh: 95; sed: 4
file content (23 lines) | stat: -rw-r--r-- 384 bytes parent folder | download | duplicates (32) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 
#include "f2c.h"

#ifdef KR_headers
extern double log(), f__cabs(), atan2();
VOID c_log(r, z) complex *r, *z;
#else
#undef abs
#include "math.h"
#ifdef __cplusplus
extern "C" {
#endif
extern double f__cabs(double, double);

void c_log(complex *r, complex *z)
#endif
{
	double zi, zr;
	r->i = atan2(zi = z->i, zr = z->r);
	r->r = log( f__cabs(zr, zi) );
	}
#ifdef __cplusplus
}
#endif