Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - alglin3.c (source / functions) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 87.6 % 646 566 Test Date: 2026-08-03 17:05:01 Functions: 85.2 % 61 52 Legend: Lines:     hit not hit

Function Name	Hit count
RgM_apply	42
RgM_diagonal	0
RgM_diagonal_shallow	1059000
RgV_apply	185865
RgX_apply	7
apply0	53519
arithprogset	92704
check_callgen1	55424
diagonal	1348699
diagonal_shallow	349629
eqcatselapply	0
eqselapply	70
extract0	39914
extract_copy	101
extract_selector_ok	35
fold0	28
gen_parapply	372069
gen_parapply_percent	382068
gen_parapply_slice	7750
gen_parapply_slice_zv	6825
gen_parpairwiseop	0
gen_parpairwiseop_percent	0
genapply	53519
genfold	28
genindexselect	110
genselect	104
get_range	112
gtomat	377817
gtrans	43744
map_apply	21
map_apply_i	63
matmuldiagonal	70
matmultodiagonal	7
matslice0	210
parapply	1744
parapply_slice_worker	44
parselect	30
row_transpose	27280210
row_transposecopy	18730
rowslice_i	14
rowsmallslice_i	0
select0	131
select_0	85
ser_apply	7
shallowextract	52687
shallowmatextract	13216
shallowtrans	7471019
str_to_long	182
vecapply	132346
veccatapply	0
veccatselapply	0
vecrange	10877
vecrangess	0
vecselapply	469
vecselect	0
vecslice0	1666
vecslice_i	2702
vecslice_parse_arg	2065
vecsmallslice_i	28
vecsum	153203
zv_diagonal	672

Generated by: LCOV version 2.0-1