forked from personal/squiggle.c
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
#ifndef SQUIGGLE_C_EXTRA
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#define SQUIGGLE_C_EXTRA
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// Box
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struct box {
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int empty;
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double content;
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char* error_msg;
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};
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// Macros to handle errors
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#define MAX_ERROR_LENGTH 500
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#define EXIT_ON_ERROR 0
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#define PROCESS_ERROR(error_msg) process_error(error_msg, EXIT_ON_ERROR, __FILE__, __LINE__)
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struct box process_error(const char* error_msg, int should_exit, char* file, int line);
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// Inverse cdf
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struct box inverse_cdf_double(double cdf(double), double p);
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struct box inverse_cdf_box(struct box cdf_box(double), double p);
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// Samplers from cdf
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struct box sampler_cdf_double(double cdf(double), uint64_t* seed);
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struct box sampler_cdf_box(struct box cdf(double), uint64_t* seed);
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// Get 90% confidence interval
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typedef struct ci_t {
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float low;
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float high;
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} ci;
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ci get_90_confidence_interval(double (*sampler)(uint64_t*), uint64_t* seed);
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// small algebra manipulations
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typedef struct normal_params_t {
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double mean;
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double std;
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} normal_params;
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normal_params algebra_sum_normals(normal_params a, normal_params b);
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typedef struct lognormal_params_t {
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double logmean;
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double logstd;
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} lognormal_params;
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lognormal_params algebra_product_lognormals(lognormal_params a, lognormal_params b);
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lognormal_params convert_ci_to_lognormal_params(ci x);
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ci convert_lognormal_params_to_ci(lognormal_params y);
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#endif
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