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From: =?UTF-8?B?5pyJ5r6k5YGl5rK7?= <karisawa@gmail.com>
Date: Sun, 1 Oct 2023 10:52:17 +0900
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X-Bullshit: structured open CMS JSON component-aware high-performance-scale out-scaling framework 
Subject: [9front] Bug in APE pcc
Reply-To: 9front@9front.org
Precedence: bulk

Try:
------ BEGIN ----
#include <stdio.h>
#include <math.h>
int
main(int argc, char *argv[])
{
    printf("log2 %f\n",log2(8));
    printf("log10 %f\n",log10(100));
    return 0;
}
----- END ----

The result is
hebe# pcc -o a1 a1.c
/usr/arisawa/doc/ape/intro/a1.c:7[stdin:321] function not declared: log2
hebe#
hebe# ape/psh
$ cc -o a1 a1.c
$ a1
log2 0.000000
log10 2.000000

How to fix the problem?
add
    extern double log2(double);
to
    /amd64/include/ape/math.h
then OK.

Kenji Arisawa