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 30634-7c77b4d1a9) Lines: 1467 1530 95.9 % Date: 2026-01-25 09:23:13 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15202
_sqrtnr	22594
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48565
realroots	50627
ZX_sturm_irred	116576
ZX_sturm_i	122971
polsolve	166691
split_pols	166691
splitcauchy	166699
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296165
_gen_zero	326010
fix_roots1	398346
conformal_mapping	467782
split_1	467783
split_0_1	468145
split_0_2	468146
update_radius	493831
logradius	493833
split_2	493833
parameters	493835
optimize_split	493836
split_fromU	493836
split_0	494198
refine_F	502217
dft	502225
all_roots	535875
clean_roots	535920
fix_roots	536966
a_posteriori_errors	536975
mygprec_special	536981
logpre_modulus	606539
logmodulus	606543
abs_update_r	778528
ind_maxlog2	902430
isexactscalar	931714
isreal	961619
initdft	996058
dual_modulus	1012181
usp	1125895
ZX_sturmpart	1128226
check_ab	1178853
tocomplex	1213149
isvalidcoeff	1228149
ZX_Uspensky	1313726
conformal_basecase	1403470
conformal_pol	1403589
fujiwara_bound_real	1406701
split_complete	1525369
homothetie	1609606
append_clone	1613501
logmin_modulus	1614321
root_error	1911587
mygprecrc_special	2178235
ZX_rescale2prim	2233489
cmp_complex_appr	2237246
fujiwara_bound	2271012
checkbound	2354836
refine_H	2459911
scalepol	4288134
mygprec_absolute	4337402
_mp_mul	4374439
logmax_modulus	4449505
splitpoleval	5234749
bkeval_single_power	5235065
newton_polygon	5505209
X2XP1	5989696
_mp_sqr	6298185
dblexp	6547175
quicktofp	6976660
RgX_gtofp_bit	7029008
abs_update	8003440
mydbllogr	9544200
homothetie2n	9954390
_gen_nored	11198949
eval_rel_pol	13134263
fft	14155127
_gen_one	14470771
ZX_to_ZiX	16449631
pol_to_gaussint	17583722
_mp_add	24659034
_mp_cmul	34760818
myshiftrc	35495214
homothetie_gauss	36490738
findpower	40943805
lower_bound	40944739
graeffe	49498128
mydbllog2r	56169072
mygprec	63741601
ZiX_sqr	99013399
myshiftic	135813570
mygprecrc	215123748
mydbllog2i	226386061
dbllog2	302044246

Generated by: LCOV version 1.16