Function sgeam 

pub unsafe fn sgeam(
    handle: cublasHandle_t,
    transa: cublasOperation_t,
    transb: cublasOperation_t,
    m: c_int,
    n: c_int,
    alpha: *const f32,
    a: CUdeviceptr,
    lda: c_int,
    beta: *const f32,
    b: CUdeviceptr,
    ldb: c_int,
    c: CUdeviceptr,
    ldc: c_int,
) -> Result<(), GpuError>

cublasSgeam / cublasDgeam — matrix add/scale: C = α·op(A) + β·op(B).

Safety

Pointers must be valid for (m,n) matrices with leading dims lda/ldb/ldc in column-major layout.