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Date:      Thu, 26 Oct 2017 10:05:00 +0800
From:      blubee blubeeme <gurenchan@gmail.com>
To:        FreeBSD Ports <freebsd-ports@freebsd.org>,  FreeBSD current <freebsd-current@freebsd.org>
Subject:   can't link against math.h
Message-ID:  <CALM2mE=VO3VkS3EdP4GhZRudyxcgJNQwH3vFqBUmdY3Ze3kBwQ@mail.gmail.com>

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I wrote a simple test program to test and see if math.h has the function:
exp10f

#include <math.h>

int main(int argc, char** argv)
{
(void)argv;
return ((int*)(&exp10))[argc];
}

tried compiling it with clang:
clang++ test.cpp -o test -lm
test.cpp:7:17: error: use of undeclared identifier 'expf10'
return ((int*)(&expf10))[argc];
                ^
1 error generated.

tried with gcc:
gcc test.cpp -o test -lm
test.cpp: In function 'int main(int, char**)':
test.cpp:7:17: error: 'expf10' was not declared in this scope
 return ((int*)(&expf10))[argc];

Does FreeBSD math.h have expf10 and if so, how do I link against it?



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