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libc/math: Fix wrong ouput in ceil() API

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Ex:for input x = 1.0, the ouput should be 1.0, but the ouput was 2.0.

Signed-off-by: Lokesh B V <lokeshbv333@gmail.com>
This commit is contained in:
Lokesh B V 2017-07-20 18:04:19 +05:30
parent 6062af0a94
commit beec197c69
3 changed files with 9 additions and 3 deletions
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4
libc/math/lib_ceil.c
View File

@ -41,8 +41,10 @@
#ifdef CONFIG_HAVE_DOUBLE
double ceil(double x)
{
double x1 = x;
modf(x, &x);
if (x > 0.0)
if (x1 > 0.0 && fabs(x1 - x) > 0.0)
{
x += 1.0;
}

4
libc/math/lib_ceilf.c
View File

@ -37,8 +37,10 @@
float ceilf(float x)
{
float x1 = x;
modff(x, &x);
if (x > 0.0F)
if (x1 > 0.0F && fabsf(x1 - x) > 0.0F)
{
x += 1.0F;
}

4
libc/math/lib_ceill.c
View File

@ -41,8 +41,10 @@
#ifdef CONFIG_HAVE_LONG_DOUBLE
long double ceill(long double x)
{
long double x1 = x;
modfl(x, &x);
if (x > 0.0)
if (x1 > 0.0 && fabsl(x1 - x) > 0.0)
{
x += 1.0;
}