Changeset 992ffa6 in mainline for uspace/app/tester/float/float2.c

Timestamp:

2015-09-04T06:40:20Z (9 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

01cdd5a

Parents:

bae1e1f

Message:

Add exp(f), log(f), pow(f). Improve precision of sin, cos.

File:

• uspace/app/tester/float/float2.c (modified) (9 diffs)

uspace/app/tester/float/float2.c

@@ -1 +1 @@
 /*
  * Copyright (c) 2014 Martin Decky
+ * Copyright (c) 2015 Jiri Svoboda
  * All rights reserved.
  *
@@ -27 +28 @@
  */
 
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -32 +34 @@
 #include "../tester.h"
 
-#define OPERANDS   10
-#define PRECISION  100000000
+#define OPERANDS         10
+#define PRECISIONF    10000
+#define PRECISION 100000000
 
 static double arguments[OPERANDS] = {
         3.5, -2.1, 100.0, 50.0, -1024.0, 0.0, 768.3156, 1080.499999, -600.0, 1.0
 };
+
+static double arguments_exp[OPERANDS] = {
+        3.5, -2.1, 50.0, 0.0, 1.0, 13.2, -1.1, -5.5, 0.1, -66.0
+};
+
+static double arguments_log[OPERANDS] = {
+        3.5, 100.0, 50.0, 768.3156, 1080.499999, 1.0, 66.0,
+        2.718281828459045, 9.9, 0.001
+};
+
 
 static double results_ceil[OPERANDS] = {
@@ -63 +76 @@
 };
 
+static double results_log[OPERANDS] = {
+        1.252762968495, 4.605170185988, 3.912023005428, 6.644200586236,
+        6.985179175021, 0.000000000000, 4.189654742026, 1.000000000000,
+        2.292534757141, -6.907755278982
+};
+
+static double results_exp[OPERANDS] = {
+        33.115451958692, 0.122456428253, 5184705528587072045056.0,
+        1.000000000000, 2.718281828459, 540364.937246691552, 0.332871083698,
+        0.004086771438, 1.105170918076, 0.000000000000
+};
+
+static bool cmp_float(float a, float b)
+{
+        float r;
+
+        /* XXX Need fabsf() */
+        if (b < 1.0 / PRECISIONF && b > -1.0 / PRECISIONF)
+                r = a;
+        else
+                r = a / b - 1.0;
+
+        /* XXX Need fabsf() */
+        if (r < 0.0)
+                r = -r;
+
+        return r < 1.0 / PRECISIONF;
+}
+
+static bool cmp_double(double a, double b)
+{
+        double r;
+
+        /* XXX Need fabs() */
+        if (b < 1.0 / PRECISION && b > -1.0 / PRECISION)
+                r = a;
+        else
+                r = a / b - 1.0;
+
+        /* XXX Need fabs() */
+        if (r < 0.0)
+                r = -r;
+
+        return r < 1.0 / PRECISION;
+}
+
 const char *test_float2(void)
 {
         bool fail = false;
-        
+
         for (unsigned int i = 0; i < OPERANDS; i++) {
                 double res = floor(arguments[i]);
@@ -73 +132 @@
                 
                 if (res_int != corr_int) {
-                        TPRINTF("Double floor failed (%" PRId64 " != %" PRId64
-                            ", arg %u)\n", res_int, corr_int, i);
+                        TPRINTF("Double precision floor failed (%" PRId64
+                            " != %" PRId64 ", arg %u)\n", res_int, corr_int, i);
                         fail = true;
                 }
@@ -85 +144 @@
                 
                 if (res_int != corr_int) {
-                        TPRINTF("Double ceil failed (%" PRId64 " != %" PRId64
-                            ", arg %u)\n", res_int, corr_int, i);
+                        TPRINTF("Double precision ceil failed (%" PRId64
+                            " != %" PRId64 ", arg %u)\n", res_int, corr_int, i);
                         fail = true;
                 }
@@ -97 +156 @@
                 
                 if (res_int != corr_int) {
-                        TPRINTF("Double truncation failed (%" PRId64 " != %" PRId64
-                            ", arg %u)\n", res_int, corr_int, i);
+                        TPRINTF("Double precisiontruncation failed (%" PRId64
+                            " != %" PRId64 ", arg %u)\n", res_int, corr_int, i);
                         fail = true;
                 }
@@ -109 +168 @@
                 
                 if (res_int != corr_int) {
-                        TPRINTF("Double sine failed (%" PRId64 " != %" PRId64
-                            ", arg %u)\n", res_int, corr_int, i);
+                        TPRINTF("Double precision sine failed (%" PRId64
+                            " != %" PRId64 ", arg %u)\n", res_int, corr_int, i);
                         fail = true;
                 }
@@ -121 +180 @@
                 
                 if (res_int != corr_int) {
-                        TPRINTF("Double cosine failed (%" PRId64 " != %" PRId64
-                            ", arg %u)\n", res_int, corr_int, i);
+                        TPRINTF("Double precision cosine failed (%" PRId64
+                            " != %" PRId64 ", arg %u)\n", res_int, corr_int, i);
+                        fail = true;
+                }
+        }
+        
+        for (unsigned int i = 0; i < OPERANDS; i++) {
+                float res = logf(arguments_log[i]);
+                
+                if (!cmp_float(res, results_log[i])) {
+                        TPRINTF("Single precision logarithm failed "
+                            "(%lf != %lf, arg %u)\n", res, results_log[i], i);
+                        fail = true;
+                }
+        }
+        
+        for (unsigned int i = 0; i < OPERANDS; i++) {
+                double res = log(arguments_log[i]);
+                
+                if (!cmp_double(res, results_log[i])) {
+                        TPRINTF("Double precision logarithm failed "
+                            "(%lf != %lf, arg %u)\n", res, results_log[i], i);
+                        fail = true;
+                }
+        }
+        
+        for (unsigned int i = 0; i < OPERANDS; i++) {
+                float res = exp(arguments_exp[i]);
+                
+                if (!cmp_float(res, results_exp[i])) {
+                        TPRINTF("Single precision exponential failed "
+                            "(%lf != %lf, arg %u)\n", res, results_exp[i], i);
+                        fail = true;
+                }
+        }
+        
+        for (unsigned int i = 0; i < OPERANDS; i++) {
+                double res = exp(arguments_exp[i]);
+                
+                if (!cmp_double(res, results_exp[i])) {
+                        TPRINTF("Double precision exponential failed "
+                            "(%lf != %lf, arg %u)\n", res, results_exp[i], i);
                         fail = true;
                 }