38 lines
598 B
C
38 lines
598 B
C
/***
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* Math and algorithms.
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* @module math
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*/
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#include <lua.h>
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#include <lauxlib.h>
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#include "lcallisto.h"
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#include "util.h"
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static int
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math_lerp(lua_State *L)
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{
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double x; /* parameter 1 (number) */
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double y; /* parameter 2 (number) */
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double z; /* parameter 3 (number) */
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x = luaL_checknumber(L, 1);
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y = luaL_checknumber(L, 2);
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z = luaL_checknumber(L, 3);
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lua_pushnumber(L, x + (y - x) * z);
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return 1;
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}
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static const luaL_Reg mathlib[] = {
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{"lerp", math_lerp},
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{NULL, NULL}
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};
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int
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callistoopen_math(lua_State *L)
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{
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newoverride(L, mathlib, CALLISTO_MATHLIBNAME);
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return 0;
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}
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