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[Bug-gsl] int8_t (signed char) not available on some architectures
From: |
Alejandro C |
Subject: |
[Bug-gsl] int8_t (signed char) not available on some architectures |
Date: |
Mon, 23 Sep 2019 22:12:12 +0200 |
There are functions that have derivatives for the different types. For
example
`double gsl_stats_mean(const double data[], const size_t stride, const
size_t n)` (`<gsl/gsl_statistics_double.h>`)
has derivatives such as:
`double gsl_stats_short_mean(const short data[], const size_t stride, const
size_t n)` (`<gsl/gsl_statistics_short.h>`)
`double gsl_stats_uchar_mean(const unsigned char data[], const size_t
stride, const size_t n)` (`<gsl/gsl_statistics_uchar.h>`)
`double gsl_stats_char_mean(const char data[], const size_t stride, const
size_t n)` (`<gsl/gsl_statistics_char.h>`)
With all those functions, one can use any of the types in a x64
environment. But in aarch64 (Manjaro ARM @ Raspberry Pi 3B+), `char` is
unsigned, so `gsl_stats_uchar_mean()` and `gsl_stats_char_mean()` result in
the same function, and there is no function for `int8_t` (a.k.a. `signed
char`) arrays.
Bug fix: easy, just replace every appearance of `char` by the more
explicit `signed char`.
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