R Under development (unstable) (2023-12-09 r85665 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> suppressPackageStartupMessages(library(float))
> set.seed(1234)
> 
> testd = function(test, truth) all.equal(dbl(test$d), truth$d, tol=tol)
> testu = function(test, truth) all.equal(dbl(abs(test$u)), abs(truth$u), tol=tol)
> testv = function(test, truth) all.equal(dbl(abs(test$v)), abs(truth$v), tol=tol)
> same = function(test, truth)
+ {
+   stopifnot(testd(test, truth))
+   stopifnot(ifelse(is.null(test$u), is.null(truth$u), testu(test, truth)))
+   stopifnot(ifelse(is.null(test$v), is.null(truth$v), testv(test, truth)))
+ }
> 
> tester = function(s, x, ...)
+ {
+   test = La.svd(s, ...)
+   truth = La.svd(x, ...)
+   same(test, truth)
+ }
> 
> tol = 1e-5
> 
> 
> 
> ### m > n
> m = 10
> n = 3
> 
> s = flrnorm(m, n)
> x = dbl(s)
> 
> tester(s, x, nu=0, nv=0)
> 
> tester(s, x, nv=0)
> tester(s, x, nu=m, nv=0)
> tester(s, x, nu=m-1, nv=0)
> tester(s, x, nu=n, nv=0)
> tester(s, x, nu=n-1, nv=0)
> 
> tester(s, x, nu=0)
> tester(s, x, nu=0, nv=n)
> tester(s, x, nu=0, nv=n-1)
> 
> tester(s, x, nu=m, nv=n)
> tester(s, x)
> 
> 
> 
> ### svd() driver
> test = svd(s)
> truth = svd(x)
> same(test, truth)
> 
> 
> 
> ### m < n
> m = 3
> n = 10
> 
> s = t(s)
> x = t(x)
> 
> tester(s, x, nu=0, nv=0)
> 
> tester(s, x, nv=0)
> tester(s, x, nu=m, nv=0)
> tester(s, x, nu=m-1, nv=0)
> 
> tester(s, x, nu=0, nv=n)
> tester(s, x, nu=0, nv=n-1)
> tester(s, x, nu=0, nv=m)
> tester(s, x, nu=0, nv=m-1)
> 
> tester(s, x, nu=m, nv=n)
> tester(s, x)
> 
> proc.time()
   user  system elapsed 
   0.39    0.03    0.40