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 - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30604-e5d817ee12) Lines: 1467 1530 95.9 % Date: 2026-01-09 09:21:43 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296157
RgX_gtofp_bit	7028796
RgX_normalize1	35733
X2XP1	5990059
ZX_Uspensky	1313731
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15202
ZX_graeffe	5390
ZX_realroots_irred	48564
ZX_rescale2prim	2233658
ZX_sturm	6395
ZX_sturm_i	122974
ZX_sturm_irred	116579
ZX_sturmpart	1128235
ZX_to_ZiX	16451165
ZiX_sqr	99007785
_gen_nored	11199366
_gen_one	14469439
_gen_zero	325998
_intervalcmp	0
_mp_add	24660839
_mp_cmul	34759406
_mp_mul	4374367
_mp_sqr	6298061
_mp_sub	0
_sqrtnr	22594
a_posteriori_errors	536965
abs_update	8003488
abs_update_r	778504
all_roots	535864
append_clone	1613472
bkeval_single_power	5234712
check_ab	1178862
checkbound	2354854
checkvalidpol	266892
clean_roots	535915
cleanroots	231763
cmp_complex_appr	2237226
conformal_basecase	1403473
conformal_mapping	467788
conformal_pol	1403594
dblexp	6547162
dbllog2	302040664
dft	502230
dual_modulus	1012185
eval_rel_pol	13134033
fft	14154511
fft2	7462
findpower	40944955
fix_roots	536967
fix_roots1	398345
fujiwara_bound	2270985
fujiwara_bound_real	1406701
graeffe	49496798
homothetie	1609598
homothetie2n	9954226
homothetie_gauss	36487717
ind_maxlog2	902439
initdft	996066
isexactpol	239753
isexactscalar	931714
isreal	961628
isvalidcoeff	1228149
logmax_modulus	4449534
logmin_modulus	1614345
logmodulus	606523
logpre_modulus	606530
logradius	493833
lower_bound	40944001
mydbllog2i	226367802
mydbllog2r	56169515
mydbllogr	9544264
mygprec	63741124
mygprec_absolute	4337366
mygprec_special	536979
mygprecrc	215122494
mygprecrc_special	2178220
myshiftic	135803616
myshiftrc	35494173
newton_polygon	5505030
optimize_split	493841
parameters	493836
pol_to_gaussint	17583454
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166687
quicktofp	6976641
realroots	50627
refine_F	502226
refine_H	2459929
root_error	1911572
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288188
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494202
split_0_1	468149
split_0_2	468150
split_1	467789
split_2	493838
split_complete	1525370
split_fromU	493841
split_pols	166686
splitcauchy	166703
splitpoleval	5235226
tocomplex	1213123
update_radius	493840
usp	1125951

Generated by: LCOV version 1.16