tests: Eliminate random floating-point generation.

[cdecl99.git] / t / rng.c

diff --git a/t/rng.c b/t/rng.c
index 8ae2f1369cb812dff820e368ceab54d0e133ef17..fec991ce1259b718bf10f6a4743bf7283ad50e2b 100644 (file)
--- a/t/rng.c
+++ b/t/rng.c
@@ -1,6 +1,6 @@
 /*
  * Simple random number generator for testing.
- * Copyright © 2022 Nick Bowler
+ * Copyright © 2022-2023 Nick Bowler
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -27,8 +27,6 @@
 #include <inttypes.h>
 #include <errno.h>
 #include <limits.h>
-#include <float.h>
-#include <math.h>
 
 #include "test.h"
 
@@ -116,20 +114,6 @@ void test_rng_free(struct test_rng *rng)
        free(rng);
 }
 
-#define BITS_PER_FP_DIGIT ( FLT_RADIX <  4 ? 1 \
-                         : FLT_RADIX <  8 ? 2 \
-                         : FLT_RADIX < 16 ? 3 \
-                         : FLT_RADIX < 32 ? 4 \
-                         : 5 )
-
-double test_rng_uniform(struct test_rng *rng)
-{
-       unsigned long long val = xoshiro256p(rng->state);
-       int prec = MIN(64, DBL_MANT_DIG*BITS_PER_FP_DIGIT);
-
-       return ldexp(val >> (64-prec), -prec);
-}
-
 /* Calculate the least power of two greater than val, minus 1. */
 static unsigned rng_mask(unsigned val)
 {