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PR libgfortran/16137 * configure.ac: Add tests for acosf, asinf, atan2f, atanf, ceilf, copysignf, cosf, coshf, expf, floorf, frexpf, hypotf, logf, log10f, scalbnf, sinf, sinhf, sqrtf, tanf and tanhf in libm. * config.h.in: Regenerate. * configure: Regenerate. * instrinsics/c99_functions.c (acosf, asinf, atan2f, atanf, ceilf, copysignf, cosf, coshf, expf, floorf, frexpf, hypotf, logf, log10f, nextafterf, scalbnf, sinf, sinhf, sqrtf, tanf, tanhf): New stub implementations for targets that don't support C99 float functions. From-SVN: r85473
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