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Add type conversion functions (#839)
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52
autogen/lua_constants/built-in.lua
View file

@ -249,4 +249,56 @@ end
--- Rounds `x` to the nearest integer value
function math.round(x)
return x > 0 and __math_floor(x + 0.5) or __math_ceil(x - 0.5)
end
local __common_signed_conversion = function (x, size)
x = __math_floor(x) & (1 << size) - 1
return x - ((x & (1 << (size - 1))) << 1)
end
local __common_unsigned_conversion = function (x, size)
return __math_floor(x) & (1 << size) - 1
end
--- @param x number
--- @return integer
--- Converts `x` into a valid `s8` range
--- - `[-128, 127]`
function math.s8(x)
return __common_signed_conversion(x, 8)
end
--- @param x number
--- @return integer
--- Converts `x` into a valid `s16` range
--- - `[-32768, 32767]`
function math.s16(x)
return __common_signed_conversion(x, 16)
end
--- @param x number
--- @return integer
--- Converts `x` into a valid `s32` range
--- - `[-2147483648, 2147483647]`
function math.s32(x)
return __common_signed_conversion(x, 32)
end
--- @param x number
--- @return integer
--- Converts `x` into a valid `u8` range
--- - `[0, 255]`
function math.u8(x)
return __common_unsigned_conversion(x, 8)
end
--- @param x number
--- @return integer
--- Converts `x` into a valid `u16` range
--- - `[0, 65535]`
function math.u16(x)
return __common_unsigned_conversion(x, 16)
end
--- @param x number
--- @return integer
--- Converts `x` into a valid `u32` range
--- - `[0, 4294967295]`
function math.u32(x)
return __common_unsigned_conversion(x, 32)
end

52
autogen/lua_definitions/constants.lua
View file

@ -253,6 +253,58 @@ function math.round(x)
return x > 0 and __math_floor(x + 0.5) or __math_ceil(x - 0.5)
end
local __common_signed_conversion = function (x, size)
x = __math_floor(x) & (1 << size) - 1
return x - ((x & (1 << (size - 1))) << 1)
end
local __common_unsigned_conversion = function (x, size)
return __math_floor(x) & (1 << size) - 1
end
--- @param x number
--- @return integer
--- Converts `x` into a valid `s8` range
--- - `[-128, 127]`
function math.s8(x)
return __common_signed_conversion(x, 8)
end
--- @param x number
--- @return integer
--- Converts `x` into a valid `s16` range
--- - `[-32768, 32767]`
function math.s16(x)
return __common_signed_conversion(x, 16)
end
--- @param x number
--- @return integer
--- Converts `x` into a valid `s32` range
--- - `[-2147483648, 2147483647]`
function math.s32(x)
return __common_signed_conversion(x, 32)
end
--- @param x number
--- @return integer
--- Converts `x` into a valid `u8` range
--- - `[0, 255]`
function math.u8(x)
return __common_unsigned_conversion(x, 8)
end
--- @param x number
--- @return integer
--- Converts `x` into a valid `u16` range
--- - `[0, 65535]`
function math.u16(x)
return __common_unsigned_conversion(x, 16)
end
--- @param x number
--- @return integer
--- Converts `x` into a valid `u32` range
--- - `[0, 4294967295]`
function math.u32(x)
return __common_unsigned_conversion(x, 32)
end
-------------------------
-- vec types constants --

49
src/pc/lua/smlua_constants_autogen.c
View file

@ -224,6 +224,55 @@ char gSmluaConstants[] = ""
"function math.round(x)\n"
"return x > 0 and __math_floor(x + 0.5) or __math_ceil(x - 0.5)\n"
"end\n"
"local __common_signed_conversion = function (x, size)\n"
"x = __math_floor(x) & (1 << size) - 1\n"
"return x - ((x & (1 << (size - 1))) << 1)\n"
"end\n"
"local __common_unsigned_conversion = function (x, size)\n"
"return __math_floor(x) & (1 << size) - 1\n"
"end\n"
"--- @param x number\n"
"--- @return integer\n"
"--- Converts `x` into a valid `s8` range\n"
"--- - `[-128, 127]`\n"
"function math.s8(x)\n"
"return __common_signed_conversion(x, 8)\n"
"end\n"
"--- @param x number\n"
"--- @return integer\n"
"--- Converts `x` into a valid `s16` range\n"
"--- - `[-32768, 32767]`\n"
"function math.s16(x)\n"
"return __common_signed_conversion(x, 16)\n"
"end\n"
"--- @param x number\n"
"--- @return integer\n"
"--- Converts `x` into a valid `s32` range\n"
"--- - `[-2147483648, 2147483647]`\n"
"function math.s32(x)\n"
"return __common_signed_conversion(x, 32)\n"
"end\n"
"--- @param x number\n"
"--- @return integer\n"
"--- Converts `x` into a valid `u8` range\n"
"--- - `[0, 255]`\n"
"function math.u8(x)\n"
"return __common_unsigned_conversion(x, 8)\n"
"end\n"
"--- @param x number\n"
"--- @return integer\n"
"--- Converts `x` into a valid `u16` range\n"
"--- - `[0, 65535]`\n"
"function math.u16(x)\n"
"return __common_unsigned_conversion(x, 16)\n"
"end\n"
"--- @param x number\n"
"--- @return integer\n"
"--- Converts `x` into a valid `u32` range\n"
"--- - `[0, 4294967295]`\n"
"function math.u32(x)\n"
"return __common_unsigned_conversion(x, 32)\n"
"end\n"
"--- @type integer\n"
"FONT_TINY = -1\n"
"--- @type integer\n"