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	txreallocarray.c - numtools - perform numerical operations on vectors and matri…
	git clone git://src.adamsgaard.dk/numtools
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	txreallocarray.c (287B)
	---
	1 #include <err.h>
	2 #include <stdlib.h>
	3
	4 void *
	5 xreallocarray(void *m, size_t n, size_t s)
	6 {
	7 void *nm;
	8
	9 if (n == 0 \|\| s == 0) {
	10 free(m);
	11 return NULL;
	12 }
	13 if (s && n > (size_t) - 1 / s)
	14 err(1, "realloc: overflow");
	15 if (!(nm = realloc(m, n * s)))
	16 err(1, "realloc");
	17
	18 return nm;
	19 }