Пример #1
0
/*
 * take two 32bit unsigned random values and return a float2 with
 * two random floats in a normal distribution via a Box-Muller transform
 */
R123_CUDA_DEVICE R123_STATIC_INLINE float2 boxmuller(uint32_t u0, uint32_t u1) {
    float r;
    float2 f;
    sincospif(uneg11<float>(u0), &f.x, &f.y);
    r = sqrtf(-2.f * logf(u01<float>(u1))); // u01 is guaranteed to avoid 0.
    f.x *= r;
    f.y *= r;
    return f;
}
Пример #2
0
__global__ void FloatMathPrecise() {
    int iX;
    float fX, fY;

    acosf(1.0f);
    acoshf(1.0f);
    asinf(0.0f);
    asinhf(0.0f);
    atan2f(0.0f, 1.0f);
    atanf(0.0f);
    atanhf(0.0f);
    cbrtf(0.0f);
    fX = ceilf(0.0f);
    fX = copysignf(1.0f, -2.0f);
    cosf(0.0f);
    coshf(0.0f);
    cospif(0.0f);
    cyl_bessel_i0f(0.0f);
    cyl_bessel_i1f(0.0f);
    erfcf(0.0f);
    erfcinvf(2.0f);
    erfcxf(0.0f);
    erff(0.0f);
    erfinvf(1.0f);
    exp10f(0.0f);
    exp2f(0.0f);
    expf(0.0f);
    expm1f(0.0f);
    fX = fabsf(1.0f);
    fdimf(1.0f, 0.0f);
    fdividef(0.0f, 1.0f);
    fX = floorf(0.0f);
    fmaf(1.0f, 2.0f, 3.0f);
    fX = fmaxf(0.0f, 0.0f);
    fX = fminf(0.0f, 0.0f);
    fmodf(0.0f, 1.0f);
    frexpf(0.0f, &iX);
    hypotf(1.0f, 0.0f);
    ilogbf(1.0f);
    isfinite(0.0f);
    fX = isinf(0.0f);
    fX = isnan(0.0f);
    j0f(0.0f);
    j1f(0.0f);
    jnf(-1.0f, 1.0f);
    ldexpf(0.0f, 0);
    lgammaf(1.0f);
    llrintf(0.0f);
    llroundf(0.0f);
    log10f(1.0f);
    log1pf(-1.0f);
    log2f(1.0f);
    logbf(1.0f);
    logf(1.0f);
    lrintf(0.0f);
    lroundf(0.0f);
    modff(0.0f, &fX);
    fX = nanf("1");
    fX = nearbyintf(0.0f);
    nextafterf(0.0f, 0.0f);
    norm3df(1.0f, 0.0f, 0.0f);
    norm4df(1.0f, 0.0f, 0.0f, 0.0f);
    normcdff(0.0f);
    normcdfinvf(1.0f);
    fX = 1.0f;
    normf(1, &fX);
    powf(1.0f, 0.0f);
    rcbrtf(1.0f);
    remainderf(2.0f, 1.0f);
    remquof(1.0f, 2.0f, &iX);
    rhypotf(0.0f, 1.0f);
    fY = rintf(1.0f);
    rnorm3df(0.0f, 0.0f, 1.0f);
    rnorm4df(0.0f, 0.0f, 0.0f, 1.0f);
    fX = 1.0f;
    rnormf(1, &fX);
    fY = roundf(0.0f);
    rsqrtf(1.0f);
    scalblnf(0.0f, 1);
    scalbnf(0.0f, 1);
    signbit(1.0f);
    sincosf(0.0f, &fX, &fY);
    sincospif(0.0f, &fX, &fY);
    sinf(0.0f);
    sinhf(0.0f);
    sinpif(0.0f);
    sqrtf(0.0f);
    tanf(0.0f);
    tanhf(0.0f);
    tgammaf(2.0f);
    fY = truncf(0.0f);
    y0f(1.0f);
    y1f(1.0f);
    ynf(1, 1.0f);
}