project_files/hwc/rtl/pmath.c
author Wuzzy <Wuzzy2@mail.ru>
Fri, 09 Mar 2018 19:05:59 +0100
changeset 13145 5083fb0a2992
parent 8047 25a4daa6473c
child 14185 801dc57371c3
permissions -rw-r--r--
A Classic Fairytale: Harden all missions against missing campaign variables in team file and assume default values This assumes the worst case in which the team file is missing all campaign variables except Progress. This has been successfully tested with all 10 missions and still generates a logical storyline. By default, the game assumes: - The cyborg's offer in mission 2 was refused - The traitor in mission 5 was killed As a consequence, missions 8 and 10 use the princessScene cut scene.

#include "pmath.h"
#include <stdlib.h>
#include <math.h>

/*
 * power raises base to the power power.
 * This is equivalent to exp(power*ln(base)). Therefore base should be non-negative.
 */
float fpcrtl_power(float base, float exponent)
{
    return exp(exponent * log(base));
}

/* Currently the games only uses sign of an integer */
int fpcrtl_signi(int x)
{
    if(x > 0){
        return 1;
    }
    else if(x < 0){
        return -1;
    }
    else{
        return 0;
    }
}

float fpcrtl_csc(float x)
{
    return 1 / sin(x);
}

float __attribute__((overloadable)) fpcrtl_abs(float x)
{
    return fabs(x);
}
double __attribute__((overloadable)) fpcrtl_abs(double x)
{
    return fabs(x);
}
int __attribute__((overloadable)) fpcrtl_abs(int x)
{
    return abs(x);
}

int64_t __attribute__((overloadable)) fpcrtl_abs(int64_t x)
{
    return x < 0 ? -x : x;
}