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* m4/modf-ieee.m4: New file. * m4/modf.m4 (gl_FUNC_MODF): If gl_FUNC_MODF_IEEE is present, test whether modf works with NaN and Inf. Replace it if not. * lib/math.in.h (modf): New declaration. * lib/modf.c: New file. * m4/math_h.m4 (gl_MATH_H): Test whether modf is declared. (gl_MATH_H_DEFAULTS): Initialize GNULIB_MODF, REPLACE_MODF. * modules/math (Makefile.am): Substitute GNULIB_MODF, REPLACE_MODF. * modules/modf (Files): Add lib/modf.c. (Depends-on): Add math, isfinite, trunc, isinf. (configure.ac): Addrange to compile lib/modf.c if needed. * modules/modf-ieee (Files): Add m4/modf-ieee.m4, m4/minus-zero.m4, m4/signbit.m4. (configure.ac): Invoke gl_FUNC_MODF_IEEE. * tests/test-math-c++.cc: Check the declaration of modf. * doc/posix-functions/modf.texi: Mention the modf-ieee module.
29 lines
274 B
Plaintext
29 lines
274 B
Plaintext
Description:
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modf() function according to ISO C 99 with IEC 60559.
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Files:
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m4/modf-ieee.m4
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m4/minus-zero.m4
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m4/signbit.m4
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Depends-on:
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modf
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fpieee
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configure.ac:
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gl_FUNC_MODF_IEEE
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Makefile.am:
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Include:
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<math.h>
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Link:
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$(MODF_LIBM)
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License:
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LGPL
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Maintainer:
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Bruno Haible
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