Where's ldexpf?

Steve Kargl sgk at troutmask.apl.washington.edu
Mon Dec 5 13:33:09 PST 2005


#include <stdio.h>
#include <math.h>

int main(void) {
	float x;
	x = ldexpf(2., 2);
	printf("%e\n", x);
	return 0;
}

cc -o z ldexpf.c -lm
/mnt1/sgk/tmp/ccoP164Y.o(.text+0x16): In function `main':
undefined reference to `ldexpf'

Perhpas, we need a weak reference.

--- /usr/src/lib/msun/src/e_scalbf.c.orig       Mon Dec  5 13:29:47 2005
+++ /usr/src/lib/msun/src/e_scalbf.c    Mon Dec  5 13:28:53 2005
@@ -42,3 +42,5 @@
        return scalbnf(x,(int)fn);
 #endif
 }
+
+__weak_reference(scalbf, ldexpf);


-- 
Steve


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