Cumulative Hazard from Survival Probability Calculator

            from math import *

def survival_cumulative_hazard_calculator(a, b) -> float:
    return (-(a * log(b)))

assert abs(survival_cumulative_hazard_calculator(1, 0.72) - 0.3285040669720361) < 1e-6 * max(1.0, abs(0.3285040669720361))
          

            #include <assert.h>
#include <math.h>

double survival_cumulative_hazard_calculator(double a, double b) {
    return (-(a * log(b)));
}

int main(void) {
    const double expected = 0.3285040669720361;
    const double actual = survival_cumulative_hazard_calculator(1, 0.72);
    assert(fabs(actual - expected) < 1e-6 * fmax(1.0, fabs(expected)));
}
          

            #include <cassert>
#include <cmath>
#include <numbers>

double survival_cumulative_hazard_calculator(double a, double b) {
    return (-(a * std::log(b)));
}

int main() {
    constexpr double expected = 0.3285040669720361;
    const double actual = survival_cumulative_hazard_calculator(1, 0.72);
    assert(std::fabs(actual - expected) < 1e-6 * std::fmax(1.0, std::fabs(expected)));
}
          

x86-64 NASM · System V ABI · Linux · SSE2 with libm where required

            ; double survival_cumulative_hazard_calculator(double a, double b)
; Linux x86-64 NASM · System V ABI · first eight doubles in xmm0–xmm7
extern log
global survival_cumulative_hazard_calculator
section .text

survival_cumulative_hazard_calculator:
    push rbp
    mov rbp, rsp
    sub rsp, 48
    movsd [rbp-8], xmm0
    movsd [rbp-16], xmm1
    movsd xmm0, [rbp-16]
    call log wrt ..plt
    movsd [rbp-40], xmm0
    movsd xmm0, [rbp-8]
    mulsd xmm0, [rbp-40]
    movsd [rbp-32], xmm0
    pxor xmm0, xmm0
    subsd xmm0, [rbp-32]
    movsd [rbp-24], xmm0
    movsd xmm0, [rbp-24]
    leave
    ret
          

            function result = survival_cumulative_hazard_calculator(a, b)
    result = (-(a * log(b)));
end
          

            ClearAll[mwCalculate];
mwCalculate[a_, b_] := (-(a * Log[b]));