prog8/compiler/res/prog8lib/virtual/floats.p8

; Prog8 definitions for floating point handling on the VirtualMachine

%option enable_floats

floats {

    const float  PI     = 3.141592653589793
    const float  TWOPI  = 6.283185307179586

sub print_f(float value) {
    ; ---- prints the floating point value (without a newline).
    %ir {{
        loadm.f fr65500,floats.print_f.value
        syscall 25
        return
    }}
}

sub pow(float value, float power) -> float {
    %ir {{
        loadm.f fr0,floats.pow.value
        loadm.f fr1,floats.pow.power
        fpow.f fr0,fr1
        returnreg.f fr0
    }}
}

sub fabs(float value) -> float {
    %ir {{
        loadm.f fr0,floats.fabs.value
        fabs.f fr0,fr0
        returnreg.f fr0
    }}
}

sub sin(float angle) -> float {
    %ir {{
        loadm.f fr0,floats.sin.angle
        fsin.f fr0,fr0
        returnreg.f fr0
    }}
}

sub cos(float angle) -> float {
    %ir {{
        loadm.f fr0,floats.cos.angle
        fcos.f fr0,fr0
        returnreg.f fr0
    }}
}

sub tan(float value) -> float {
    %ir {{
        loadm.f fr0,floats.tan.value
        ftan.f fr0,fr0
        returnreg.f fr0
    }}
}

sub atan(float value) -> float {
    %ir {{
        loadm.f fr0,floats.atan.value
        fatan.f fr0,fr0
        returnreg.f fr0
    }}
}

sub ln(float value) -> float {
    %ir {{
        loadm.f fr0,floats.ln.value
        fln.f fr0,fr0
        returnreg.f fr0
    }}
}

sub log2(float value) -> float {
    %ir {{
        loadm.f fr0,floats.log2.value
        flog.f fr0,fr0
        returnreg.f fr0
    }}
}

sub sqrt(float value) -> float {
    %ir {{
        loadm.f fr0,floats.sqrt.value
        sqrt.f fr0,fr0
        returnreg.f fr0
    }}
}

sub rad(float angle) -> float {
    ; -- convert degrees to radians (d * pi / 180)
    return angle * PI / 180.0
}

sub deg(float angle) -> float {
    ; -- convert radians to degrees (d * (1/ pi * 180))
    return angle * 180.0 / PI
}

sub round(float value) -> float {
    %ir {{
        loadm.f fr0,floats.round.value
        fround.f fr0,fr0
        returnreg.f fr0
    }}
}

sub floor(float value) -> float {
    %ir {{
        loadm.f fr0,floats.floor.value
        ffloor.f fr0,fr0
        returnreg.f fr0
    }}
}

sub ceil(float value) -> float {
    ; -- ceil: tr = int(f); if tr==f -> return  else return tr+1
    %ir {{
        loadm.f fr0,floats.ceil.value
        fceil.f fr0,fr0
        returnreg.f fr0
    }}
}

sub rndf() -> float {
    %ir {{
        syscallr.f fr0,35
        returnreg.f fr0
    }}
}

sub rndseedf(float seed) {
    %ir {{
        loadm.f  fr65500,floats.rndseedf.seed
        syscall 32
    }}
}

}