Rename builtins/ -> stdlib/

1 files changed, 178 insertions, 0 deletions

diff --git a/stdlib/nums.c b/stdlib/nums.c
new file mode 100644
index 00000000..1956140a
--- /dev/null
+++ b/stdlib/nums.c
@@ -0,0 +1,178 @@
+// 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$as_text(const double *f, bool colorize, const TypeInfo *type) { 
+    (void)type;
+    if (!f) return Text("Num");
+    return Text$format(colorize ? "\x1b[35m%.16g\x1b[33;2m\x1b[m" : "%.16g", *f); 
+} 
+
+public PUREFUNC int32_t Num$compare(const double *x, const double *y, const TypeInfo *type) { 
+    (void)type;
+    return (*x > *y) - (*x < *y);
+} 
+
+public PUREFUNC bool Num$equal(const double *x, const double *y, const TypeInfo *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$format("%.*e", (int)Int_to_Int64(precision, false), f); 
+}
+
+public double Num$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$isinf(double n) { return !!isinf(n); }
+public CONSTFUNC bool Num$finite(double n) { return !!finite(n); }
+public CONSTFUNC bool Num$isnan(double n) { return !!isnan(n); }
+
+public const TypeInfo Num$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 *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 *type) { 
+    (void)type;
+    return (*x > *y) - (*x < *y);
+} 
+
+public PUREFUNC bool Num32$equal(const float *x, const float *y, const TypeInfo *type) { 
+    (void)type;
+    return *x == *y;
+}
+
+public CONSTFUNC bool Num32$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 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 isinf(n); }
+public CONSTFUNC bool Num32$finite(float n) { return finite(n); }
+public CONSTFUNC bool Num32$isnan(float n) { return isnan(n); }
+
+public const TypeInfo 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