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// Type infos and methods for Nums (floating point)
#include <float.h>
#include <gc.h>
#include <math.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include "arrays.h"
#include "nums.h"
#include "string.h"
#include "text.h"
#include "types.h"
public PUREFUNC Text_t Num$as_text(const double *f, bool colorize, const TypeInfo_t *type) {
(void)type;
if (!f) return Text("Num");
return Text$format(colorize ? "\x1b[35m%.16g\x1b[33;2m\x1b[m" : "%.16g", *f);
}
public PUREFUNC int32_t Num$compare(const double *x, const double *y, const TypeInfo_t *type) {
(void)type;
return (*x > *y) - (*x < *y);
}
public PUREFUNC bool Num$equal(const double *x, const double *y, const TypeInfo_t *type) {
(void)type;
return *x == *y;
}
public CONSTFUNC bool Num$near(double a, double b, double ratio, double absolute) {
if (ratio < 0) ratio = 0;
else if (ratio > 1) ratio = 1;
if (a == b) return true;
double diff = fabs(a - b);
if (diff < absolute) return true;
else if (isnan(diff)) return false;
double epsilon = fabs(a * ratio) + fabs(b * ratio);
if (isinf(epsilon)) epsilon = DBL_MAX;
return (diff < epsilon);
}
public Text_t Num$format(double f, Int_t precision) {
return Text$format("%.*f", (int)Int_to_Int64(precision, false), f);
}
public Text_t Num$scientific(double f, Int_t precision) {
return Text$format("%.*e", (int)Int_to_Int64(precision, false), f);
}
public CONSTFUNC double Num$mod(double num, double modulus) {
double result = fmod(num, modulus);
return (result < 0) != (modulus < 0) ? result + modulus : result;
}
public double Num$random(void) {
return drand48();
}
public CONSTFUNC double Num$mix(double amount, double x, double y) {
return (1.0-amount)*x + amount*y;
}
public OptionalNum_t Num$from_text(Text_t text) {
const char *str = Text$as_c_string(text);
char *end = NULL;
double d = strtod(str, &end);
if (end > str && end[0] == '\0')
return d;
else
return nan("null");
}
public double Num$nan(Text_t tag) {
return nan(Text$as_c_string(tag));
}
public CONSTFUNC bool Num$isinf(double n) { return (fpclassify(n) == FP_INFINITE); }
public CONSTFUNC bool Num$finite(double n) { return (fpclassify(n) != FP_INFINITE); }
public CONSTFUNC bool Num$isnan(double n) { return (fpclassify(n) == FP_NAN); }
public const TypeInfo_t Num$info = {
.size=sizeof(double),
.align=__alignof__(double),
.tag=CustomInfo,
.CustomInfo={
.compare=(void*)Num$compare,
.equal=(void*)Num$equal,
.as_text=(void*)Num$as_text,
},
};
public PUREFUNC Text_t Num32$as_text(const float *f, bool colorize, const TypeInfo_t *type) {
(void)type;
if (!f) return Text("Num32");
return Text$format(colorize ? "\x1b[35m%.8g_f32\x1b[33;2m\x1b[m" : "%.8g_f32", (double)*f);
}
public PUREFUNC int32_t Num32$compare(const float *x, const float *y, const TypeInfo_t *type) {
(void)type;
return (*x > *y) - (*x < *y);
}
public PUREFUNC bool Num32$equal(const float *x, const float *y, const TypeInfo_t *type) {
(void)type;
return *x == *y;
}
public CONSTFUNC bool Num32$near(float a, float b, float ratio, float absolute) {
if (ratio < 0) ratio = 0;
else if (ratio > 1) ratio = 1;
if (a == b) return true;
float diff = fabs(a - b);
if (diff < absolute) return true;
else if (isnan(diff)) return false;
float epsilon = fabs(a * ratio) + fabs(b * ratio);
if (isinf(epsilon)) epsilon = FLT_MAX;
return (diff < epsilon);
}
public Text_t Num32$format(float f, Int_t precision) {
return Text$format("%.*f", (int)Int_to_Int64(precision, false), (double)f);
}
public Text_t Num32$scientific(float f, Int_t precision) {
return Text$format("%.*e", (int)Int_to_Int64(precision, false), (double)f);
}
public CONSTFUNC float Num32$mod(float num, float modulus) {
float result = fmodf(num, modulus);
return (result < 0) != (modulus < 0) ? result + modulus : result;
}
public float Num32$random(void) {
return (float)drand48();
}
public CONSTFUNC float Num32$mix(float amount, float x, float y) {
return (1.0f-amount)*x + amount*y;
}
public OptionalNum32_t Num32$from_text(Text_t text) {
const char *str = Text$as_c_string(text);
char *end = NULL;
double d = strtod(str, &end);
if (end > str && end[0] == '\0')
return d;
else
return nan("null");
}
public float Num32$nan(Text_t tag) {
return nanf(Text$as_c_string(tag));
}
public CONSTFUNC bool Num32$isinf(float n) { return (fpclassify(n) == FP_INFINITE); }
public CONSTFUNC bool Num32$finite(float n) { return (fpclassify(n) != FP_INFINITE); }
public CONSTFUNC bool Num32$isnan(float n) { return (fpclassify(n) == FP_NAN); }
public const TypeInfo_t Num32$info = {
.size=sizeof(float),
.align=__alignof__(float),
.tag=CustomInfo,
.CustomInfo={
.compare=(void*)Num32$compare,
.equal=(void*)Num32$equal,
.as_text=(void*)Num32$as_text,
},
};
// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0
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