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24 lines
1.2 KiB
24 lines
1.2 KiB
dnl -*- Autoconf -*-
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dnl Copyright (C) 1993-2003 Free Software Foundation, Inc.
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dnl This file is free software, distributed under the terms of the GNU
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dnl General Public License. As a special exception to the GNU General
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dnl Public License, this file may be distributed as part of a program
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dnl that contains a configuration script generated by Autoconf, under
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dnl the same distribution terms as the rest of that program.
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dnl From Bruno Haible, Marcus Daniels, Sam Steingold.
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AC_PREREQ(2.57)
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AC_DEFUN([CL_FPU_CONTROL],
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[dnl Check for Linux with <fpu_control.h> and fpu_control_t or __setfpucw().
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dnl glibc versions since October 1998 define fpu_control_t. Earlier versions
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dnl define and declare __setfpucw(). Very early Linux libc versions have none,
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dnl and __fpu_control is of type `unsigned short'.
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CL_COMPILE_CHECK([fpu_control_t], cl_cv_type_fpu_control_t,
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[#include <fpu_control.h>], [fpu_control_t x;],
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AC_DEFINE(HAVE_FPU_CONTROL_T,,[have <fpu_control.h> and it defines the fpu_control_t type]))
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CL_COMPILE_CHECK([__setfpucw], cl_cv_func_setfpucw,
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[#include <fpu_control.h>], [__setfpucw(_FPU_IEEE);],
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AC_DEFINE(HAVE_SETFPUCW,,[have <fpu_control.h> and it declares the __setfpucw() function]))
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])
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