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Cristy
55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/*
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Copyright @ 1999 ImageMagick Studio LLC, a non-profit organization
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dedicated to making software imaging solutions freely available.
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You may not use this file except in compliance with the License. You may
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obtain a copy of the License at
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https://imagemagick.org/license/
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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MagickCore private graphic gems methods.
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*/
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#ifndef MAGICKCORE_STATISTIC_PRIVATE_H
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#define MAGICKCORE_STATISTIC_PRIVATE_H
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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static inline MagickBooleanType MagickSafeSignificantError(const double error,
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const double fuzz)
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{
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double threshold = (fuzz > 0.0 ? fuzz : MagickEpsilon)*(1.0+MagickEpsilon);
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return(error > threshold ? MagickTrue : MagickFalse);
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}
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static inline double MagickSafeLog10(const double x)
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{
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if (x <= 0.0)
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return(log10(MagickEpsilon));
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if (x < MagickEpsilon)
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return(log10(MagickEpsilon));
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if (fabs(x-1.0) < MagickEpsilon)
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return(0.0);
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return(log10(x));
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}
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static inline double MagickSafeReciprocal(const double x)
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{
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if ((x > -MagickEpsilon) && (x < MagickEpsilon))
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return(1.0/MagickEpsilon);
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return(1.0/x);
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}
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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#endif
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