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Missing math.h function declarations on AIX 6.1 or later

Troubleshooting


Problem

When compiling code using math.h on AIX 6.1 or later, and explicitly including the compiler header file directory in the include file search path, the compiler is unable to find the standard math function declarations.

Symptom

Compiling the following test case and explicitly including the compiler header file directory in the -I search path results in the following error messages:

$ cat test.cpp
#include <math.h>

int main()
{
return ceil(5.6) + floor(6.3);
}
$ xlC test.cpp -I/usr/vacpp/include
"test.cpp", line 5.16: 1540-0274 (S) The name lookup for "ceil" did not find a declaration.
"test.cpp", line 5.28: 1540-0274 (S) The name lookup for "floor" did not find a declaration.
$

Compiling on AIX 5.3 or earlier succeeds.

[{"Product":{"code":"SSGH3R","label":"XL C\/C++ for AIX"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Compiler","Platform":[{"code":"PF002","label":"AIX"}],"Version":"10.1;11.1","Edition":"","Line of Business":{"code":"LOB73","label":"Power TPS"}}]

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Document Information

Modified date:
06 December 2018

UID

swg21499673

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