mirror of
https://github.com/irmen/prog8.git
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165 lines
2.9 KiB
Lua
165 lines
2.9 KiB
Lua
; Prog8 definitions for floating point handling on the VirtualMachine
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%option enable_floats
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floats {
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const float π = 3.141592653589793
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const float PI = π
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const float TWOPI = 2*π
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sub print_f(float value) {
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; ---- prints the floating point value (without a newline).
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%ir {{
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loadm.f fr65535,floats.print_f.value
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syscall 25 (fr65535.f)
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return
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}}
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}
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sub parse_f(str value) -> float {
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; -- parse a string value of a number to float
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%ir {{
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loadm.w r65535,floats.parse_f.value
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syscall 45 (r65535.w): fr0.f
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returnr.f fr0
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}}
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}
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sub pow(float value, float power) -> float {
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%ir {{
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loadm.f fr0,floats.pow.value
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loadm.f fr1,floats.pow.power
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fpow.f fr0,fr1
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returnr.f fr0
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}}
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}
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sub sin(float angle) -> float {
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%ir {{
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loadm.f fr0,floats.sin.angle
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fsin.f fr0,fr0
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returnr.f fr0
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}}
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}
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sub cos(float angle) -> float {
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%ir {{
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loadm.f fr0,floats.cos.angle
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fcos.f fr0,fr0
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returnr.f fr0
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}}
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}
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sub tan(float value) -> float {
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%ir {{
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loadm.f fr0,floats.tan.value
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ftan.f fr0,fr0
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returnr.f fr0
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}}
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}
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sub atan(float value) -> float {
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%ir {{
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loadm.f fr0,floats.atan.value
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fatan.f fr0,fr0
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returnr.f fr0
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}}
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}
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sub ln(float value) -> float {
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%ir {{
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loadm.f fr0,floats.ln.value
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fln.f fr0,fr0
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returnr.f fr0
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}}
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}
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sub log2(float value) -> float {
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%ir {{
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loadm.f fr0,floats.log2.value
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flog.f fr0,fr0
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returnr.f fr0
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}}
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}
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sub rad(float angle) -> float {
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; -- convert degrees to radians (d * pi / 180)
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return angle * PI / 180.0
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}
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sub deg(float angle) -> float {
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; -- convert radians to degrees (d * (1/ pi * 180))
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return angle * 180.0 / PI
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}
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sub round(float value) -> float {
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%ir {{
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loadm.f fr0,floats.round.value
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fround.f fr0,fr0
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returnr.f fr0
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}}
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}
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sub floor(float value) -> float {
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%ir {{
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loadm.f fr0,floats.floor.value
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ffloor.f fr0,fr0
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returnr.f fr0
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}}
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}
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sub ceil(float value) -> float {
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; -- ceil: tr = int(f); if tr==f -> return else return tr+1
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%ir {{
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loadm.f fr0,floats.ceil.value
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fceil.f fr0,fr0
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returnr.f fr0
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}}
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}
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sub rndf() -> float {
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%ir {{
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syscall 35 () : fr0.f
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returnr.f fr0
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}}
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}
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sub rndseedf(float seed) {
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%ir {{
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loadm.f fr65535,floats.rndseedf.seed
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syscall 32 (fr65535.f)
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return
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}}
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}
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sub minf(float f1, float f2) -> float {
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if f1<f2
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return f1
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return f2
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}
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sub maxf(float f1, float f2) -> float {
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if f1>f2
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return f1
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return f2
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}
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sub clampf(float value, float minimum, float maximum) -> float {
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if value<minimum
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value=minimum
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if value<maximum
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return value
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return maximum
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}
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sub normalize(float value) -> float {
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return value
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}
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}
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