64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
// Functions that operate on numeric ranges
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#include <ctype.h>
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#include <err.h>
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#include <gc.h>
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#include <math.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <sys/param.h>
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#include "integers.h"
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#include "text.h"
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#include "types.h"
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#include "util.h"
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PUREFUNC static int32_t Range$compare(const Range_t *x, const Range_t *y, const TypeInfo_t *type)
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{
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(void)type;
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if (x == y) return 0;
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int32_t diff = Int$compare(&x->first, &y->first, &Int$info);
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if (diff != 0) return diff;
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diff = Int$compare(&x->last, &y->last, &Int$info);
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if (diff != 0) return diff;
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return Int$compare(&x->step, &y->step, &Int$info);
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}
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PUREFUNC static bool Range$equal(const Range_t *x, const Range_t *y, const TypeInfo_t *type)
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{
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(void)type;
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if (x == y) return true;
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return Int$equal(&x->first, &y->first, &Int$info) && Int$equal(&x->last, &y->last, &Int$info) && Int$equal(&x->step, &y->step, &Int$info);
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}
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static Text_t Range$as_text(const Range_t *r, bool use_color, const TypeInfo_t *type)
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{
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(void)type;
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if (!r) return Text("Range");
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return Text$format(use_color ? "\x1b[0;1mRange\x1b[m(first=%r, last=%r, step=%r)"
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: "Range(first=%r, last=%r, step=%r)",
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Int$as_text(&r->first, use_color, &Int$info), Int$as_text(&r->last, use_color, &Int$info),
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Int$as_text(&r->step, use_color, &Int$info));
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}
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PUREFUNC public Range_t Range$reversed(Range_t r)
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{
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return (Range_t){r.last, r.first, Int$negative(r.step)};
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}
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PUREFUNC public Range_t Range$by(Range_t r, Int_t step)
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{
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return (Range_t){r.first, r.last, Int$times(step, r.step)};
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}
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public const TypeInfo_t Range$info = {sizeof(Range_t), __alignof(Range_t), {.tag=CustomInfo, .CustomInfo={
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.as_text=(void*)Range$as_text,
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.compare=(void*)Range$compare,
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.equal=(void*)Range$equal,
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}}};
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// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0
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